WO2017068104A1

WO2017068104A1 - Foot-measuring device and method

Info

Publication number: WO2017068104A1
Application number: PCT/EP2016/075321
Authority: WO
Inventors: Christopher John Towns; Peter Rickett; Samuel Jones
Original assignee: C & J Clark International Limited
Priority date: 2015-10-22
Filing date: 2016-10-21
Publication date: 2017-04-27
Also published as: GB2557851A; GB201806802D0; GB2543551A; GB201518704D0

Abstract

Measurement devices and methods are disclosed. A measurement device comprises a base (13) for receiving an object to be measured, wherein the base (13) comprises at least a first portion (11, 151, 15) and a second portion (101, 11, 153, 15) moveable relative to the first portion (11, 151, 15), and an abutment (14, 21) moveable relative to the first portion (11, 151, 15) and the second portion (101, 11, 153, 15) according to the object to be measured. The arrangement is such that in a first position of the second portion (101, 11, 153, 15) a first measurement area is defined by the first portion (11, 151, 15) and the second portion (101, 11, 153, 15). In this position the abutment (14, 21) is moveable continuously on the first measurement area. In a second position of the second portion (101, 11, 153, 15) a second measurement area is defined solely by the second portion (101, 11, 153, 15).

Description

FOOT-MEASURING DEVICE AND METHOD

The present invention relates to measuring of objects.

Various measurement devices and methods are known. A measurement device can comprise a base and at least two abutments arranged to be moved relative each other on the base such that when an object to be measured is placed on the base, an abutment can be moved into contact with the object, and a readout taken from a scale indicative of a measurement of the object in one dimension.

According to a particular aspect a foot is measured for the purpose of determining the size of footwear. An example of foot measuring devices is a footgauge provided with an abutment movable relative to a scale. Conventionally a footgauge comprises a graduated scale attached to a base of the footgauge which is read e.g. by a staff member in a shoe shop after a foot has been placed on the base. Typically a footgauge comprises opposing abutments that can be brought into contact with the heel and toes of the foot to be measured. A shop typically has a single type of a footgauge that is used for all customers. However, such "one size fits all" approach may not always be efficient as customers of e.g. different size and/or age might be more efficiently measured by different measurement devices and/or measurement techniques. There can also be a desire to have a more convenient and accurate way of performing the foot measurement for a variety of people and/or measurement occasions. For example, in accordance with a specific scenario, e.g. when measuring a child or a person who finds it difficult to stand whilst having one foot on the footgauge, it might make the measuring operation easier and more comfortable if the footgauge could be positioned such that the person can sit while the foot is measured.

It might also be desired in some scenarios if the measurement, once taken, is not easily lost even if the footgauge is moved, the foot moves on the footgauge and/or the foot is removed from the footgauge.

Similar issues can occur when measuring other types of objects.

Embodiments of the invention aim to address one or several of the issues related to measurement of objects by a measurement device.

According to an aspect there is provided a measurement device, comprising a base for receiving an object to be measured, wherein the base comprises at least a first portion and a second portion moveable relative to the first portion, and an abutment moveable relative to the first portion and the second portion according to the object to be measured, wherein in a first position of the second portion a first measurement area is defined by the first portion and the second portion such that the abutment is moveable continuously on the first measurement area, and in a second position of the second portion a second measurement area is defined by the second portion such that for the purposes of measurements the abutment is moved only on the second portion..

According to another aspect there is provided a method for measuring objects by a measurement device comprising at least a first portion and a second portion co-operative with the first portion, the method comprising moving the second portion relative to the first portion to selectively provide a desired measurement area for receiving an object to be measured, wherein the first and second portions jointly provide a first measurement area and the second portion alone provides a second measurement area, moving an abutment according to the object to be measured, depending on the position of the second portion, either continuously on the first measurement area or only on the second measurement area, and determining measurement information based on the position of the abutment.

In accordance with a more specific aspect, when in the first position, the first and second portions, and possible at least one third portion, are arranged to form a flat base providing a continuous measurement surface. When in the second position, the second portion is pivoted into an angle relative to the first portion. A support mechanisms may be provided for supporting the second portion in the second position in an angle relative to the first portion. The support mechanisms may comprise the first portion. The second portion may be pivoted to about 40 to 50 degree angle relative to the first portion. According to another possibility the second portion may be pivoted to about 90 degree angle relative to the first portion.

The moveable second portion may also be detachable from the first portion and arranged to provide a detached measurement area in the second position.

At least one third portion moveable relative to the first portion and the second portion may be provided. In the first position of the at least one third portion the first measurement area is defined jointly by the first portion, the second portion and the at least one third portion such that the abutment is moveable continuously on the first measurement area. The first portion, the second portion and the at least one third portion can be pivotally and/or detachably attached to each other. The arrangement can be such that the portions can be pivoted relative to each other to provide at least a flat position, a tilted measurement position and a folded position.

A guide arrangement for guiding movement of the abutment on the first measurement area may be provided. The guide arrangement may comprise a guide groove extending at least on the first and second portions, and also on at least one third portion if such is provided.

The base may comprise at least one teethed part and the moveable abutment comprises at least one a co-operative teethed part for restraining movement of the moveable abutment. In addition, or alternatively, at least one of a magnet, a cam, a hook and loop fastener and a fabric configured to restrain movement of the moveable abutment may be provided. An actuator for selective release and restraint of the moveable abutment may be provided.

At least one of a magnet, a clip, a clasp, a locking mechanism, a cam, a hook and loop fastener, and a strap may be provided to restrain movement of at least one of the portions relative to another portion.

An abutment on a carriage can be arranged to align on the base along at least one guide, the carriage comprising at least one side wall for engagement with the object to be measured, and a sideways guiding arrangement for enabling guided sideways movement of the carriage. The sideways guiding arrangement may comprises teeth formations on the base and the carriage comprise co-operative teeth formations, the abutment being arranged to be moveable relative to the co-operative teeth formations.

The second portion, when in the first position, can be arranged to join smoothly the first portion and/or at least one third portion to provide a continuous base for smooth sliding movement of the moveable abutment.

The base can comprise a measurement pattern, and the moveable abutment can be arranged to provide a datum point that is visible for a camera such that the position of the moveable abutment relative to the base can be determined based on digital image processing of images taken by the camera of the datum point. The measurement pattern may be provided on the surface of the base. The pattern can be covered by a transparent cover. The transparent cover may comprise teeth formations for aligning the abutment.

The abutment and the datum point can be arranged on a carriage moveable relative to the base such that the datum point and the abutment are moveable relative to the carriage. In accordance with an aspect there is provided a measurement device comprising a base for receiving an object to be measured, an abutment moveable relative to the base according to the object to be measured, and at least one guide extending on the base for guiding the movement of the abutment, wherein the abutment comprises an engagement mechanism for engaging the abutment to the base via the at least one guide, the engagement mechanism comprising a user operable restraining element arranged to selectively prevent movement of the abutment relative to the guide.

An aspect is a method for operating such a measurement device, comprising moving an abutment relative to a base according to an object to be measured, the movement of the abutment being guided by at least one guide extending on the base, the abutment engaging with the at least one guide via an engagement mechanism, and selectively preventing the movement of the abutment relative to the guide by a user operable restraining element arranged to engage with at least one surface of the at least one guide.

According to a more specific embodiment of this aspect the at least one guide comprises a groove extending along the length of the base and the engagement mechanism comprises a sliding element protruding into the groove. Co-operative teeth formations can be provided on the bottom and/or at least one side of the groove and on a respective surface of the sliding element. An actuator for controlling the engagement of the teeth formations may also be provided. The engagement mechanism may comprise a magnet for holding the engagement mechanism engaged.

The engagement mechanism can be further configured to guide movement of the abutment in a second direction. The engagement mechanism can comprise a sliding element configured to move in a second guide arranged in the moveable abutment.

The measurement device can comprise a footgauge.

Various exemplifying embodiments of the invention are described below with reference to the attached drawings. Steps and elements explained herein may be reordered, omitted, and combined to form different embodiments and any step indicated as performed may be caused to be performed by another device or module. In the drawings:

Figure 1 shows an example of a measurement device in a first operational position,

Figures 2A, 2B and 2C show examples where a part of the device of Figure 1 is in different operational positions, Figure 3 shows an example of a guide extending on two different portions of the device of Figures 1 and 2,

Figure 4 shows an example of a carriage from below suitable for use with the device of Figures 1 and 2,

Figure 5 shows a further embodiment,

Figure 6 shows an example of measuring foot width,

Figure 7 shows an example of a display on an imaging apparatus,

Figures 8 A and 8B show examples of possible co-operating teeth,

Figures 9 - 17 show examples of a teethed surface on a base,

Figures 18 A and 18B are further examples of alignment formations,

Figures 19 - 21 show further examples of abutment elements,

Figures 22 and 23 are flowcharts in accordance with certain embodiments,

Figures 24A to 24C show a yet further example of a measurement device, and

Figure 25 shows an example of control apparatus for determining measurements.

In the following certain detailed examples of measurement apparatuses and methods are described with reference to the appended Figures. Some of the examples are described with reference to a footgauge and measurement of a foot but it is noted that similar principles can be applied to measurement of other objects.

Figure 1 illustrates an example of a measurement device 10 comprising a base in the form of a base-plate 13. A first abutment 14 of the measurement device 10 is located a one end of the base. A moveable abutment or carriage 12 is also shown. The back wall of the carriage 12 provides a second abutment 21 which faces the first abutment 14. Abutments 14 and 21 define there between a measurement space 18 where an object to be measured can be placed.

The carriage 12 has a generally flat base to enable the carriage 12 to sit on and slide along the base-plate 13 generally towards or away from the abutment 14. For example, the arrangement can be configured to measure the length of a foot. In certain embodiments the carriage can also move sideways. Certain examples of use o sideways movement of the carriage are explained with reference to Figures 6, 16 and 17.

The base-plate 13 is divided into two portions 11 and 15, referred to herein as the first portion and second portion. The second portion 15 is moveable relative to the first portion 1 1 , the arrangement being such that in a first operational position the first and second portions form a flat base so that the carriage 12 can move on the entire length of the base-plate 13, as shown in Figure 1. In this position the base can display a continuous measurement pattern. Figures 3 and 5 - 7 show an example where an irregular pattern 17 is provided on the base. It is also possible to provide a regular pattern or scale extending continuously on the surfaces of both portions.

The base 13 also provides a continuous guide arrangement comprising a single groove 40 extending on the first and second portions. A co-operative sliding element 42 is also provided for guiding the carriage 12 on the base-plate 13. Details of these features will be described in more detail later.

Figures 2 A and 2B show an example of a second operational position where the second portion 15 has been turned up about a pivot 19 at one end thereof. Thus the surface of the second portion is now positioned in an angle relative to the base-plate 13 and the first portion. The angle relative to the base can be determined based on the specific use of the device. In accordance with a particular example the angle can be between 40 to 50 degrees, preferably 45 degrees

A specific support mechanism can also be provided enabling one angled position of the second portion, or a plurality of different angled positions of the second portion. In Figure 2B the second portion 15 is shown to be supported by a support 20 in the second operational position. In accordance with a possibility the pivot 19 provides a retaining or lockable support mechanism so that the second portion remains in a particular desired position where it has been set by the user for the measurement. In accordance with a possibility the second portion can be raised and locked into any angle, for example any angle between 0 and 90°.

In accordance with an embodiment shown in Figure 2C the second portion 1 1 can be detached from the first portion 15. In the detached position the second portion 15 provides a separately useable smaller measurement device. In accordance with a particular example a smaller footgauge is provided. Such a lightweight measurement device, e.g. a footgauge can be more convenient to be held by hand. This can be advantageous e.g. when measuring feet of a small child or another small object.

In accordance with a possibility the pivot mechanism at 19 is such that it allows pivoting and detachment of the second portion 15.

The embodiments can thus provide differently sized and positioned measurement areas 18, 18', depending on the operational position of the second portion 15. For example, a measurement surface of a footgauge can be lifted being in an angled position so that e.g. a person sitting on a chair or a small child sitting on a parent's lap can more conveniently place his/hers foot against the surface, or the surface can be placed against the foot.

When the second portion 15 is in the first operational position of Figure 1, the carriage 12 can move smoothly along the continuous groove 40 and be used on the entire surface of the footgauge. A measurement pattern on the surface can continue seamlessly between the portions. Figure 3 illustrates an example of the smooth continuity of the surface, a pattern 17 on the surface and the guide groove 40. In the second position of Figures 2A - C the continuity between the first and second portions is broken and the carriage 12 is operable only on the second portion 15.

Figures 1 - 3 and 5 show a guide extending length- wise on the base-plate 13 to comprise a groove 40. An engagement mechanism can be provided for engaging the carriage and thus the moveable abutment to the base via the guide. According to a possibility at least one surface of the guide groove can be provided with a teething 41 for engagement with a co-operative teething arranged in the carriage to prevent unwanted movement of the carriage on a measurement surface during and after measurement.

Details of a possible engagement mechanism of a carriage 12 are shown in Figure 4 illustrating an example of a carriage and sliding engagement mechanism from below. The engagement mechanism can comprise a sliding element 42 adapted for sliding movement in the groove 40 on the base-plate so that the carriage 12 is guided to move along pre-defined straight path on the base-plate. At the end of the sliding element is a teething portion 43 adapted to co-operatively engage with the teething 41 at the bottom of the groove 40 of the base-plate 13.

The sliding element 42 can be pivotally attached on support element 46. An actuator 45 (see e.g. Figure 1) can be operated to lift off the teething 43 from the co-operative teething 41 of the groove. The engagement mechanism can be provided with at least one magnet 44 for attachment to a magnetic element at the bottom of the groove 40. The arrangement can be such that a metal strip is placed underneath the teething 41 provided on a plastic material, of the teething can be made of magnetic material.

Figure 3 shows the teething 41 to be located at the bottom of the groove 40.

Alternatively, or in addition, teething can be provided on at least one side wall of the groove and a co-operative teething can be provided on the respective side of the sliding element. Furthermore, if another construction for guiding the carriage on the base-plate is provided, for example the guiding is based on a rail arrangement or the like, the teething can be provided on any appropriate surface of such guide.

Figure 1 shows also the possibility of providing a second guide arrangement for guiding the carriage 12 in the sideways direction. This can be provided by means of a second sliding element 46 arranged to guide the movement of the carriage along a slot 47 provided in the carriage 12. Use and operation of the sideways movement of the carriage is explained below by way of examples with reference to Figures 6, 16 and 17.

If deemed necessary, a retaining arrangement can also be provided between the slot 47 and the sliding element 46 for selectively preventing sideways movement. For example, a second teething or the like can be provided.

In the detailed example of Figures 3 and 4 the retaining mechanism is provided for the lengthwise movement of the carriage 12 by means of co-operative teething of the groove on the base-plate and the carriage. Different arrangements are also possible. For example, selective restraining of movement of the carriage can be provided means for retention such as those based on mechanical -based fastening products, such as a hook and loop fastener, co-operative felts or the like fabric material provided in the bottom or one or more sides of the groove and co-operating with appropriate elements at the carriage or the like. Also, a strong enough magnet may be provided for selectively engaging to a metal strip provided in the groove for preventing unwanted movement of the carriage. An option would be to provide a cam or clamp arranged to be operable such that it can be actuated into a movement preventing position. The cam or clamp can be coated with rubber or other friction enhancing material.

In accordance with a possibility measurements are determined based on digital image processing. The determination can be based on the position of the carriage 12 relative to a location dependent pattern provided on the surfaces of the first and second portions of the measurement device. Figures 3 and 5 to 7 show non-limiting examples of irregular patterns 17 consisting of different shapes for use in measurements of at least the distance between first and second abutments 14, 21. In this example the measurement pattern 17 comprises a random array of different shapes and smaller patterns 16. The measurement pattern 1 can be provided by various techniques on the surfaces. For example, a pattern can be produced during manufacture of e.g. plastic base plate parts. Printing, painting, a sticker and so on are other non-limiting examples of possibilities to produce the pattern. In accordance with a possibility a transparent cover layer is provided on top of the base such that an image (e.g. on paper or a thin plastic sheet) can be slipped underneath it and then used as the measurement pattern. The cover can be provided e.g. from clear plastic. The image can be e.g. a print of a download, an advertisement presented e.g. in a magazine, newspaper, catalogue, leaflet and so on, or a pattern on or print included in a cardboard box, e.g. a shoe box. Personalised patterns, for example photographs and so on, can also be used. In accordance with a possibility the transparent cover is laid on a patterned surface, e.g. floor, and such pattern is used for the measurement determinations. Information about the pattern can be downloaded into the imaging apparatus so that it can be used for measurements. The software of the imaging apparatus can also be configured to calibrate itself to a new pattern.

In accordance with an embodiment described next a moveable carriage 12 comprises an imaging opening or window 26, or similar element providing a datum point for a digital image processing system. The window opens towards the base plate so that a part of the pattern 17 is visible through the window 26 while other parts around the visible part are covered by the carriage. The pattern can be any appropriate pattern which enables determination of the position of the abutment 21 of the carriage 12 relative to the abutment 14. That is, the pattern is such that unique location dependent views can be provided through the window in different locations of the carriage on the base plate. The difference can be provided based regular and/or irregular shapes, symbols, markings, colours, characters and so forth.

The arrangement is such that at least one image of the pattern can be captured through the window 26 by an imaging device 23, as shown in Figure 5. The imaging device can comprise an appropriate device provided with a camera (not visible in Figure 5) and data processing device for processing image data. Imaging by a camera pointed to the window is depicted by camera view 24. Thus the camera can capture through the window arranged to move relative to the pattern a unique location dependent view of a part of the pattern. Based on the captured image at least one measurement of an object placed in the relevant measurement space can then be determined in a predetermined manner.

The groove 40, or other guide on the base, can also be utilised as a part of the pattern. For example, the straight edge of the groove can be used for orientation of the image and/or as reference line. The imaging device 23 can advantageously be a handheld device. In certain examples a Touchscreen Computer Device (TCD) 23 is used. TCD can be in the form of a mobile phone, or "smart phone", having a built-in camera 24 which is pointed to the opening. Although a touchscreen device can be advantageously used, a more basic mobile phone having a camera can also be used although some functionality as described later may be lost. A device comprising the camera can also be a larger device than a mobile phone, such as a tablet computer device. A digital camera with data processing capabilities may also be used. It is therefore noted that although in a particular example a reference is made to a touch screen device (TCD) with a camera, the camera can be included in any appropriate device.

In accordance with an embodiment relating to a footgauge, a foot placed in the measurement space (either in the first or the second operational position), and is measured based on at least one image taken of the window 26. Shoe size indication can then be determined based on the at least one image. Determining the at least one measurement can be based on information of the pattern and the relation of the part visible through the windows to the edges of the window. The edges can be used as the datum point of the window. For example, the device can calculate via a suitable application ("App"; a computer program loaded on to the device) the required shoe size based on the position of the window 26 relative to the pattern taking into account the known distance of the window 26 from the second abutment 21. The determining can be based on differently patterned and/or coloured areas of the measurement pattern 17 on the base plate 13. The opening, or at least one edge thereof provides at least one datum point that is used to determine the location of the abutment element relative to the base.

Processing of information based on the datum point and view obtained by imaging through the window can be provided at the device comprising the camera. Alternatively, a part of the processing can be provided in a remote location such as a server. Also, least a part of the processed information may be communicated from the device comprising the camera for use elsewhere. For example, data can be communicated to a remote server.

Figures 5 - 7 show a use scenario where a user can hold a user device 23, for example a smart phone or a tablet, in hand and points it towards the window 26. Although the image may be somewhat blurry, the image processing software can determine from the distinguishable patterns visible in the window the position of the window, and hence the carriage, and the image by the handheld device can be sufficient, depending on the application.

Figures 6 and 7 further illustrates an example where a carriage 12 is used to measure both the width and length of a foot 1 placed on a patterned base plate 13. In this example, the heel of the foot 1 is placed against the back abutment 14. One of the side walls 28, 29 of the carriage 12 is placed against one side of the foot. The abutment 21 of the carriage is placed against the toes. At this stage a first image of the window 26 is captured. The carriage is then moved sideways so that the other side wall touches the foot. At this stage a second image is captured.

Figure 7 shows a display 30 on a touchscreen device 23 when the carriage is on the second position, i.e. position of Figure 6. The pointer box 31 indicated the location on the window on the pattern. The length and width of the object, in this example a foot, as computed by an application running on the device based on the two images is shown at the bottom of the display. The shoe size can then be determined based on these dimensions.

A handheld device can apparently be held at different distances and angles relative to the window, and focusing and/or alignment of the camera may be desired. An arrangement for focusing a handheld camera can be as follows. The carriage 12 can be provided with a distinctive pattern 25 that is placed close to the window 26. In the example of Figure 6 such as pattern is provided by the stylised C larks® logo. The application running on the device 23 is aware of the exact dimension and shape of the logo, and therefore can determine its position relative to the window and adjust its the operation accordingly. Thus, when the camera is pointed to the window the application can lock to the logo or other distinctive focusing pattern and therefore also to the window. Use of the logo as the focusing pattern has the advantage that no additional patterns need to be provided and the appearance of the device can be kept clean. However, it is noted that this is only an advantageous example and that there are various other ways of providing a focusing pattern. For example, the edges of the window can be provided with appropriate focusing markings.

In accordance with a possibility the handheld device is provided with position detection apparatus, for example accelerometer or the like. The control software can be configured to determine movements and/or angular position of the device during the imaging process. The software can e.g. compare the determined values to acceptable thresholds, such as thresholds for angular position and sideways movement. The software can be arranged to proceed with the image taking and/or measurement determinations only if the position and/or movements of the device are within acceptable limits. If the device is e.g. tilted in an angle that would distort the image (e.g. the device deviates from planar for more than 4 degrees) and/or is not held in a sufficiently steady position, the software can prevent images being taken and/or cause display of and/or sound an alert that the position is not correct.

Further, the device can be configured to skew the image on the display thereof such that the image on the display of the device squares with the edges of the display only when the device is in an acceptable angle and position relative to the measurement window. In other positions the image is skewed relative to the display screen.

Part 27 of the carriage providing the window 26 can be relatively thin. In addition of making the design light, this can be used to enable wider angles for the picture taking. Also, in applications where the camera is supported on the carriage the support for the camera device can be arranged on part 27, even if it is relatively thin. Although a camera put on top of a thin support part, and thus relatively close to the pattern, may produce a blurred image, this can give accurate enough information for the processing apparatus to determine information about the size of the object to be measured.

The imaging device can be focused and/or aligned prior to capturing of an image by pointing the imaging device to a second pattern provided on a surface of the abutment element in the vicinity of the at least one datum point.

Other arrangements for providing at least one datum point and for indicating the location of the moveable carriage relative to the pattern than an opening provided by means of a window are also possible.

Figures 8A and 8B show non-limiting schematic examples for co-operating teethed parts 41 , 43. In Figure 8 A a saw tooth type arrangement is shown whereas Figure 8B shows a symmetrical tooth arrangement. Figures 8A and B also indicate by an arrow the direction of movement of the abutment towards the opposing abutment and thus foot to be measured. It is noted that the drawings are illustrative only and show the ribs and grooves of the teething to be larger in relation to the sliding element 42 than what these might be in an advantageous implementation. To illustrate, in accordance with a non-limiting example the teeth can be in the range of about 0.5 to 1.5 mm high. The size of the teething can dependent on the desired increments of the measurements, and can vary from this example. In the above examples a guide groove or slot in one direction was provided. This is believed to be a feasible solution for a variety of measurement devices. However, in certain applications such groove or guide may not be needed. It may also be desired to have a plurality of guide grooves or other guide elements. For example, two guide grooves or rails extending in lengthwise direction can be provided.

In accordance with another aspect a plurality of sideways extending guides can be provided on a base plate for ensuring appropriate linear movements and proper alignment of the carriage on the base plate. Sideways extending guides can also be used to hinder backward movement of the carriage during measurements. In accordance with a possibility this is provided by appropriate co-operating toothed elements provided on the base and underneath the carriage.

Certain examples of sideways extending teeth formations are shown in Figures 9 - 17. In the examples a guide arrangement 90 on a base 13 comprises toothed profile provided by plurality of sideways extending ribs or ridges 91 and grooves 92. The underneath of the carriage 12 is provided with cooperating teethed formations. Figure 1 1 shows teethed elements 94 arranged on a part of the bottom surface of the carriage 12 for engagement with the cooperating teethed formations 90 on the top surface of the base plate 13. Figure 13 shows another example where teethed formation 100 extends substantially on the entire bottom surface of the frame 100 of carriage 12. The ridges and grooves of the base 13 and the carriage 12 mesh with each other as shown e.g. in Figure 10.

In embodiments where the base plate 13 is divided into at least two portions moveable relative to each other to provide different operational configurations, the teethed formation on the base can extend in one configuration continuously from a portion to another such that the carriage can be moved seamlessly over a measurement area provided by at least two portions, as explained above. Figure 10 illustrates this continuity when the device is in position where the largest measurement area is provided, the teethed formations 94 of the carriage 12 being located on top of the border line 93 between the first and second portions 11 and 15 of the base plate 13. However, it is noted that the herein explained teethed arrangements can also be used with measurement devices providing only a single measurement area.

Figures 9 - 17 indicate by arrow 96 the direction of movement of the carriage 12 towards the object to be measured, referred herein as the forward direction. When the carriage 12 is moved forwards, even if the carriage is pressed towards the base, the teethed elements thereof can "jump" over the ridges of the base until the abutting wall 21 touches or is considered to be close enough to the object. The sideways extending formations 90 align the carriage during the forward movement. Once the object has been reached, the carriage can slide sideways for the width measurements.

When the object is reached and movement stops, movement of the carriage backwards is hindered by appropriately formed teeth. That is, the co-operative teeth can be formed such that movement in one direction is harder than in the other. The teeth can be shaped such that the carriage cannot be moved backwards without lifting the carriage off the base.

For example, the backwards movement can be prevented by asymmetrical shaping of the teeth as shown in Figures 10 and 12. In accordance with the specific example the pitch w = 3 mm, and the rising, more gentle edge of the teeth has length 1 = 2.1 mm. The ridge height can be in the order of h = 1 mm. Such dimensioning has shown to provide good alignment whilst enabling easy movement of the carriage forwards and robust prevention against backwards movement. Grooves of this magnitude have been found to allow production of an appropriate measurement pattern on the base 13 for the digital imaging. An example of such pattern is shown in Figs 14 - 17.

Such dimensioning of the teeth, however, may cause undesirable level of granularity for certain measurement applications. For example, granularity less than about 1.5 mm, even as little as about 0.5 mm or 1.0 might be preferred when measuring foot. The following describes a couple of examples addressing this.

In accordance with the example of Figure 11 a finer measurement granularity is provided by arranging the teethed elements 94 to be moveable relative to the carriage frame. The teethed elements 94 can be attached at the bottom of the carriage 12 such that they can slide on guides 95 distance d in the direction normal to the teeth. In this example d = 2.5 mm. The teething elements can be lightly biased by appropriate spring elements so that the abutment wall is forced towards the object when the teeth meshes in the last available free position. In this example this would leave maximum gap of 0.5 mm between the object and the abutment wall, although in most measurements the spring action would press lightly the abutment wall against the object.

Another example is described with reference to Figure 13 showing a carriage 12 from below and Figures 14 - 17 showing a plan view of the carriage in four different stages of measurement operation. The carriage 12 comprises a frame portion 100 having co- operative teeth 103 on the bottom surface 102 thereof. The teeth 103 is arranged fixedly relative to the frame, and can cover the entire, or a substantial portion of the bottom surface thereof. An opening 26 for the digital imaging is provided in a second portion 101 of the carriage 12. The second portion is attached moveably on guide elements 104 of the frame 100 such that the second portion can be moved in the lengthwise direction relative to the frame. Thus relative movement between the opening 26 and the frame 100 can be provided in the lengthwise direction.

In operation, the carriage 12 as a whole is first moved towards an object 1 to be measured over the teethed surface 90. In Figure 14 the carriage is in a position close to the object 1 but such that the abutment 21 is not yet in contact with the object. Moving the carriage 12 further may not be possible as there might not be enough clearance between the object and abutment 21 for the carriage to go over one more teeth. Also, the user may have considered the carriage be close enough to the object. However, in this position the window 26 may not yet be placed close enough relative to the object 1 and the measurement pattern 17 on the base 13 such that an accurate enough measurement could be provided.

Figure 15 shows a further step to move the window 26 to a more accurate position relative to the object 1. Once the carriage 12 has been moved close enough to the object and is steadily positioned on the teethed surface relative to the object 1 and the base 13, the windowed part 101 of the carriage 12 is moved forward 96 until it comes into contact with the object. To ease the movement a tow bar or handle 105 and/or recesses on the surface next to the window can be provided so that a user can easily push the abutting wall 21 into contact with the object. The window 26 is now correctly positioned relative to the object in the lengthwise direction.

If also the width of the object 1 is to be measured, the carriage 12 can be moved sideways on the teethed surface 90 and images takes at each extreme position. Movement of the carriage 12 between the two sides of the object 1 is illustrated in Figures 16 and 17.

A transparent teethed cover layer can be provided on top of the base. The teeth can be formed e.g. on clear plastic in per se known manufacturing techniques. An advantage of a transparent teethed cover is that it protects the measurement pattern from abrasion by the teeth of the carriage. Also, a design where e.g. a print of a design can be inserted underneath the transparent cover enables flexible use of measurement patterns and personalisation of the measurement device. In certain applications the teeth of the carriage may cause substantial abrasive forces on the surface of the base, causing scratching and wear of the pattern and/or surface. To increase the lifetime of the surface the teeth on the carriage can be manufactured from rubbery material, rubbery plastic or the like to prevent excessive wear of the base surface.

Instead of the asymmetrical tooth arrangement of Figure 12, symmetrical teeth or differently asymmetrical teeth are also possible. Examples of other possible forms of cooperative teeth are shown in Figures 8A and 8B.

It is also noted that the above mentioned dimensions are just one possible example. In accordance with another non-limiting example the width of the tooth can be in the range of about 0.5 to 1.5 mm. The size of the tooth can be selected dependent on the desired increments of the measurements, and can vary from this example.

In Figures 9 - 11 and 13 - 17 the grooves and ribs are shown to extend sideways. Such formations can also extend in the longitudinal or other directions.

Variations of the principle of having a teethed alignment structure are also possible. Figures 18A and 18B show an example where, instead of cooperating grooves and ribs, movement preventing teethed structure is provided on the base 13 and carriage 12 by projections 60. Figure 18A shows a cross-sectional view of such arrangement and Figure 18B shows an isometric view of the base plate 13. This arrangement allows movement and locking in two directions.

A possibility is to arrange the co-operative teeth between the sliding surfaces by discontinuous ridges and small round or conical projections that co-operate such that the carriage can be moved in both directions, i.e. along the grooves and at places through the gaps in the ridges.

The formations can be e.g. moulded or otherwise formed in the cooperating surfaces during manufacture of the components. This enables easy and costs effective manufacture of the alignment arrangement. An advantage of the thin formations is that a pattern with continuous appearance can be produced on top of the surface during moulding or otherwise. The top surface can be made to appear smooth and clean as there is no need for rails, deep grooves or the like alignment structures.

In accordance with a possibility a magnetic field can be provided between the carriage 12 and the base plate 13 to hold them together. To provide this at least one magnet may be provided in the carriage and/or the base plate. At least one magnetic or metallic strip extending in the direction of movement of the carriage may be provided in the base for holding and guiding and aligning a carriage sliding thereon. Use of at least two magnets and cooperating strips can be used for the alignment of the carriage. The magnets draw the carriage towards a metallic layer provided in the base plate. Magnet(s) can be positioned in a variety of manners in the base plate and/or the carriage. The magnet(s) and metallic counterparts can be visible or encased in the material.

Other types of alignment and holding arrangements may also be provided. For example, a base plate may also be provided with rails and the carriage may be provided with co-operative counterparts that engage with the rails, or the base plate can have grooves and the carriage can have protruding elements with slot into the grooves.

Other arrangements for providing at least one datum point and for indicating the location of the moveable carriage relative to the pattern than an opening provided by means of a window are also possible. Figures 19 - 21 show a few examples. In Figure 19 an abutment element 72 providing an end abutment 21 comprises a protruding element 73 extending from a first datum point surface 74 and providing a second datum point surface 75. Surfaces 74 and 75 can extend substantially normal to each other. This provides an X,Y coordinate system enabling determination of the location of the carriage 72 based on elements 16 of the pattern and their relative location to surfaces 74 and 75. If needed, one or more of the surfaces on the other side of the protruding element 73 can also be used in the measurement.

In Figure 20 an abutment element 82 is shown where the protruding element of

Figure 19 is replaced by a recess 83. The recess provides surfaces 84 and 85 that can be used to determine the location of the abutment element 82 based on imaging of the recess and features 16 of the pattern 17 that is partially covered by the abutment element and partially visible in the recess.

Figure 21 shows yet another example where only one surface 94 of an abutment element 92 is configured for use in determining a measurement of an object based on image data by an imaging apparatus. As above, the abutment element covers a part of the features 16 of the pattern 1 while other parts remain visible. One edge surface can be sufficient in certain applications, in particular if only the distance between the end abutment 21 and an opposing end abutment needs to be determined.

According to a possibility a further pattern 98, for example a logo, is provided on the carriage 92. This further pattern can be used to provide a sideways reference point and/or a focusing pattern for the imaging apparatus. Other types of alignment and holding arrangements may also be provided. For example, a base plate may also be provided with rails and the carriage may be provided with co-operative counterparts that engage with the rails.

Figure 22 shows a flowchart for measurement operation in accordance with an example by a device comprising at least a first portion and a second portion co-operative with the first portion. In the method the second portion is moved at 1 10 relative to the first portion to selectively provide a desired measurement area for receiving an object to be measured. As explained above, the first and second portions, and possibly at least one third portion, can jointly provide a first measurement area, and the second portion alone can provide a second measurement area. An abutment is moved at 1 12 according to the object to be measured, and depending on the position of the second portion, the moving takes place either on the first measurement area continuously between the first portion and the second portion, and possible at least one third portion, or only the second measurement area.

After the abutment is in a predefined position relatively to the object measurement information can be determined at 1 14 based on the position of the abutment. In accordance with a preferred example at least one image is taken and measurement information is determined based on the at least one image.

In accordance with a possibility in the first position the first and second portions form a flat base providing a continuous even measurement surface and in the second position the second portion is in an angle relative to the first portion. The moving can also comprise detaching the second portion from the first portion to provide a smaller, separate measurement area.

According to an aspect shown in Figure 23 a method for operating a measurement is provided where an abutment is moved at 120 relative to a base according to an object to be measured. The movement of the abutment is guided by at least one guide extending on the base such that the abutment engages with the at least one guide via an engagement mechanism. The movement of the abutment can be selectively prevented at 122 by operating a restraining element engaging with at least one wall of the at least one guide.

Figures 24A, B and C show another example of a measurement device configured according to the herein disclosed principles. More particularly, a footgauge 150 is shown to provide a base for receiving a foot to be measured. The base comprises a plurality of portions moveable relative to each other. Three portions 151, 152 and 153 are provided, each being pivotally connected by hinges 155 to the respective adjacent portion or portions of the measurement base. The first and second portions 151 and 153 are pivotally connected to an intermediate third portion 152.

A fixed abutment 156 at one end of the footgauge is also shown. A second abutment moveable relative to the first, second and third portions according to the foot to be measured is not shown in Figures 24A and B for clarity but can be provided by a moveable carriage as described above.

Figure 24A shows the footgauge in a "flat-out" position where all portions are used to define a continuous first measurement area such that an abutment is moveable continuously on the first measurement area.

Figure 24B shows a second measurement position where a smaller tilted measurement area is provided by the second portion 153. In this position the abutment is moveable only on the smaller measurement area provided by the second portion. The first portion 151 and third portion 152 can be pivoted about the hinges 155 in the shown manner to provide a support for the tilted second portion 153. According to the embodiment of Figure 24B the first portion 151 and the second portion 153 are substantially normal to each other. However, this is not the only possibility.

According to a possibility a smaller measurement device is provided by folding the back of the first portion 151 against the back of the second portion.

Figure 24C shows a third, folded position of the footgauge 150. This position is useful for turning the footgauge into a position where it can be packaged efficiently in a small volume box e.g. for delivery by post or the like and/or storage. As illustrated, a carriage / moveable abutment 158 can be placed in the volume between the first and second portions 151 and 153 provided by the third portion 152 forming a wall of the folded footgauge.

A holding members such as a strap 157 shown in Figure 24B can be provided to maintain the footgauge in the second position. The strap can be fastened by a clip or the like to at least one of the portions. An appropriate strap can be made of any rigid or elastic material. The strap may also be used to restrain the footgauge in the folded position of Figure 24C. In addition, or alternatively, at least one magnet can be provided to hold the third portion 152 against the second portion 153. The hinge arrangement may be provided with lock function to lock one or more of the portions in a position. A cam, a hook and loop fastener, and/or any type of a strap or bar can be arranged to restrain movement of portions relative to each other.

Figure 25 shows an example of control apparatus for a device capable of processing image data from a camera and for determining at least one measurement of a foot or another object based on images of the pattern on the base. The control apparatus 50 can be for example integrated with, coupled to and/or otherwise controlling the camera and/or device such as a touchscreen computer or a mobile phone comprising the camera. For this purpose the control apparatus comprises at least one memory 51 , at least one data processing unit 52, 53 and an input/output interface 54. Via the interface the control apparatus can be coupled to the camera and/or a communication apparatus, for example a wireless transceiver. The control apparatus can be configured to execute an appropriate software code to provide the control functions. This includes execution of the applications ("Apps") discussed earlier. The control apparatus can also be interconnected with other control entities.

The measurement data can be communicated and/or stored in a remote location such as in a server. The possibility of communicating and/or collecting measurement data can be found useful for example by users of internet shopping and/or shoe shops and manufactures who may wish to have a better knowledge of their customer base and potential customers. According to an aspect data based on images by the imaging apparatus is thus communicated to a remote data processing apparatus. For example, data can be communicated from a device comprising the camera over an internet Protocol (IP) based network to a remote server to order wearable items. The items can comprise, for example shoes, hats, gloves or any other items where measurement information is needed to ensure that a fitting item is ordered and delivered.

Data of the measurements may also be collected at a remote database for example for use in marketing and/or customer analysis. The data may be associated with a user profile, and used later e.g. for further purchasing transactions. Data collected from a number of measurements over the time can also be used for general analysis. For example, the collected data can be analysed to recognise changes in foot shapes and/or sizes over time. For example, understanding if the average foot of the shoe consuming public has got longer and/or increased in width and girth can be valuable for a manufacturer of shoes. Also, the collected data can be used to recognise national and/or geographical characteristics and/or trends. 2!

Measurement information determinations may be implemented as methods, apparatuses, or computer program products. Methods for downloading computer program code for performing the same may also be provided. Computer program products may be stored on non-transitory computer-readable media, such as memory chips, or memory blocks implemented within the processor, magnetic media such as hard disk or floppy disks, and optical media such as for example DVD and the data variants thereof, CD, magnetic disk, or semiconductor memory. A client application performing the method at a user device comprising a digital camera can be downloaded from an appropriate server. Method steps may be implemented using instructions operable to cause a computer to perform the method steps using a processor and a memory. The instructions may be stored on any computer-readable media, such as memory or non-volatile storage.

The required data processing apparatus may be provided by means of one or more data processors. The described functions at each end may be provided by separate processors or by an integrated processor. The data processors may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), application specific integrated circuits (ASIC), gate level circuits and processors based on multi core processor architecture, as non-limiting examples. The data processing may be distributed across several data processing modules. A data processor may be provided by means of, for example, at least one chip. The memory or memories may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory. In general, the various embodiments may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects of the invention may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.

While various aspects of the invention may be illustrated and described as block diagrams, flow charts, or using some other schematic pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.

In the examples arrays of randomly arranged small patterns provided the measurement pattern on the base. In accordance with a possibility the pattern can comprise a picture, such as a photograph or a picture of an artistic creation. The measurement determination software can be trained to the recognisable features and dimensions of the picture so that that it can recognise different locations on the picture based on features of the picture particular to that location. This training can even be provided on a per user basis, that is, a user can have a customised pattern on the base. A pattern in the form of a picture can then be used to determine the location of the abutment element based on the location of the datum point and visible parts of the picture. This enables e.g. use of individualised measurement patterns. The pattern may also comprise numbers, or other characters and/or a scale.

In accordance with a possibility a measurement pattern is arranged to be movable relative to a fixed abutment element and a camera is arranged to capture the movement of the pattern relative to the fixed abutment element. For example, a camera supported on a support portion fixed to the body of the measurement device or the fixed abutment element can be pointed towards a moveable pattern. A datum point can be provided in the body and/or the fixed abutment of the device so that the pattern slides relative to the datum point. Such arrangements may be desired e.g. in applications where the movable carriage shall be of simple construction.

According to a possibility the pattern is arranged on a retractable platform, e.g. on a roll arranged in association with the movable or fixed abutment element. One end of the platform is fixed relative to one of the abutments, and thus movement of one of the abutment causes the pattern to roll out when the distance increases and in when the distance decreases. A camera can be directed close to the roll end of the free pattern to capture an image of the pattern visible through an appropriately positioned window or otherwise relative to a fixed datum point.

The measurement device does not need to be placed in use on a surface, for example a floor, instead, the measurement surface, advantageously the second surface, can be held against an object to be measured. For example, an infant may not stand still on a footgauge but rather the footgauge needs to be held against his/hers foot. An arrangement to hold the foot against the base may be provided to enable e.g. capturing of images for determining size information.

The base and the moveable abutment element can be manufactured from a variety of materials by a variety of techniques. The base and/or the abutment element can be made from any plastic, aluminium or another metal alloy, metal, wood, rubber and so forth.

It will also be appreciated that a measurement device may at least in part be assembled from a flat condition from cardboard and/or other sheet materials. The assembly may require interlocking/inter-engaging flaps in order to ensure sufficient rigidity or other methods of securement may be utilised such as adhesives, adhesive tapes, sections of hook/loop fastener or other fasteners. E.g. a footgauge may also be incorporated in, and folded from, an adapted shoe box using suitable predetermined fold lines and perforations etc. such that it can be used next time a pair of shoes is required. This is particularly relevant for children's shoes as the child's feet grow with age.

A footgauge may be dimensioned so as to measure each foot individually or as a pair. When measuring a pair the parallel movement of the two abutments will ensure that the foot measurement is made on the longest foot so as to optimise the fit of the footwear. The foot size determination can comprises measurement and determination of the length and/or width and/or girth of a foot.

The foregoing description provides by way of exemplary and non-limiting examples a full and informative description of exemplary embodiments of the invention. However, various modifications and adaptations may become apparent to those skilled in the relevant arts in view of the foregoing description, when read in conjunction with the accompanying drawings and the appended claims. All such and similar modifications of the teachings of this invention will still fall within the spirit and scope of this invention.

Claims

1. A measurement device, comprising

a base for receiving an object to be measured, wherein the base comprises at least a first portion and a second portion moveable relative to the first portion,

an abutment moveable relative to the first portion and the second portion according to the object to be measured, wherein

in a first position of the second portion a first measurement area is defined jointly by the first portion and the second portion such that the abutment is moveable continuously on the first measurement area, and

in a second position of the second portion a second measurement area is defined by the second portion such that for taking a measurement the abutment is moved only on the second portion.

2. A measurement device to claim 1 , wherein,

in the first position, the first and second portions are arranged to form a flat base providing a continuous measurement surface, and

in the second position, the second portion is pivoted into an angle relative to the first portion.

3. A measurement device according to claim 2, comprising a support mechanism for supporting the second portion in the second position in an angle relative to the first portion.

4. A measurement device according to claim 2 or 3, wherein in the second position the second portion is pivoted to about 40 to 50 or about 90 degree angle relative to the first portion.

5. A measurement device according to any of claims 2 to 4, wherein the support mechanisms comprises the first portion.

6. A measurement device according to any preceding claim, wherein the moveable second portion is detachable from the first portion and arranged to provide a detached measurement area in the second position.

7. A measurement device according to any preceding claim, comprising at least one third portion moveable relative to the first portion and the second portion, wherein in the first position of the at least one third portion the first measurement area is defined jointly by the first portion, the second portion and the at least one third portion such that the abutment is moveable continuously on the first measurement area.

8. A measurement device according to claim 7, wherein the first portion, the second portion and the at least one third portion are pivotally attached to each other such that the portions can be pivoted relative to each other to provide at least a flat position, a tilted measurement position and a folded position.

9. A measurement device according to any preceding claim, comprising a guide groove extending on portions defining the first measurement area for continuous guiding of movement of the abutment on the portions.

10. A measurement device according to any preceding claim, wherein the base comprises at least one teethed part and the moveable abutment comprises at least one a co-operative teethed part for restraining movement of the moveable abutment.

11. A measurement device according to any preceding claim, comprising at least one of a magnet, a cam, a hook and loop fastener and a fabric configured to restrain movement of the moveable abutment.

12. A measurement device according to claim 10 or 1 1, comprising an actuator for selective release and restraint of the moveable abutment.

13. A measurement device according to any preceding claim, comprising at least one of a magnet, a clip, a clasp, a locking mechanism, a cam, a hook and loop fastener, and a strap arranged to restrain movement of at least one of the portions relative to another portion.

14. A measurement device according to any preceding claim, wherein the abutment is provided on a carriage arranged to align on the base along at least one guide, the carriage comprising

at least one side wall for engagement with the object to be measured, and sideways guiding arrangement for enabling guided sideways movement of the carriage.

15. A measurement device according to claim 14, wherein the sideways guiding arrangement comprises teeth formations on the base and the carriage comprises co- operative teeth formations, the abutment being arranged to be moveable relative to the cooperative teeth formations.

16. A measurement device according to any preceding claim, wherein at least the second portion when in the first position joins smoothly the first portion to provide a continuous base for smooth sliding movement of the moveable abutment.

17. A measurement device according to any preceding claim, wherein the base comprises a measurement pattern, and the moveable abutment is further arranged to provide a datum point that is visible for a camera such that the position of the moveable abutment relative to the base can be determined based on digital image processing of images taken by the camera of the datum point.

18. A measurement device according to claim 17, wherein at least one guide extending on the base forms a part of the pattern that is used by the digital image processing.

19. A measurement device according to claim 17 or 18, wherein the measurement pattern is provided on the surface of the base, the measurement device further comprising a transparent cover on the measurement pattern.

20. A measurement device according to claim 19, wherein the transparent cover comprises teeth formations.

21. A measurement device according to any of claim 17 to 20, wherein the abutment and the datum point are arranged on a carriage moveable relative to the base, the datum point and the abutment being further moveable relative to the carriage.

22. A measurement device according to any preceding claim, wherein the abutment comprises an engagement mechanism for engaging the abutment to the base via at least one guide arranged in the base, the engagement mechanism comprising a user operable restraining element arranged to selectively prevent movement of the abutment relative to the guide.

23. A measurement device according to claim 22, wherein the at least one guide comprises a groove extending along the length of the first measurement area and the engagement mechanism comprises a sliding element protruding into the groove.

24. A measurement device according to claim 23, wherein co-operative teeth formations are provided on the bottom and/or at least one side of the groove and on a respective surface of the sliding element, the device further comprising an actuator for controlling the engagement of the teeth formations.

25. A measurement device according to any of claims 22 to 24, wherein the engagement mechanism comprises a magnet for holding the engagement mechanism in the engaged position.

26. A measurement device according to any of claims 22 to 25, wherein the engagement mechanism comprises a sliding element configured to move in a second guide arranged in the moveable abutment to guide movement of the abutment in a second direction.

27. A measurement device according to any preceding claim comprising a footgauge.

28. A method for measuring objects by a measurement device comprising at least a first portion and a second portion co-operative with the first portion, the method comprising moving the second portion relative to the first portion to selectively provide a desired measurement area for receiving an object to be measured, wherein the first and second portions jointly provide a first measurement area and the second portion alone provides a second measurement area, moving an abutment according to the object to be measured, depending on the position of the second portion, either continuously on the first measurement area or only on the second measurement area, and

determining measurement information based on the position of the abutment.

29. A method according to claim 28, comprising

moving the second portion into the first position where the first and second portions form a flat base providing a continuous measurement surface, or

moving the second portion into the second position where the second portion is in an angle relative to the first portion, or

moving the first portion and at least one third portion also forming a part of the measurement area into a position supporting the second portion during a measurement, or moving the first portion, the second portion and at least one third portion into a folded position.

30. A method according claim 28 or 29, comprising detaching the second portion from the first portion to provide a detached measurement area.

31. A method according to any of claims 28 to 30, wherein the measurement device comprises co-operative teeth formations for engaging the moveable abutment with a base of the device and/or for guiding the movement of the abutment on the base, the method comprising selectively engaging or disengaging the co-operative teeth formations.

32. A method according to any of claims 28 to 31 , wherein the device comprises a measurement pattern and the abutment is arranged to provide a datum point that is visible for a camera, the method comprising pointing the camera to the datum point and determining the position of the abutment relative to the first measurement area or the second measurement area based on digital image processing of images taken by the camera of the datum point.

33. A method according to any of claims 28 to 32, wherein, comprising moving the abutment according to the object to be measured, the movement of the abutment being guided by at least one guide extending on the first measurement area, the abutment engaging with the at least one guide via an engagement mechanism, and

selectively preventing the movement of the abutment relative to the guide by a user operable restraining element arranged to engage with at least one surface of the at least one guide.

34. A method according to claim 33, wherein the at least one guide comprises a groove extending along the length of the first measurement area and the engagement mechanism comprises a sliding element protruding into the groove, and wherein co-operative teeth formations are provided on the bottom and/or at least one side of the groove and on a respective surface of the sliding element, the method comprising engaging the co-operative teeth formations.

35. A method according to claim 34, comprising controlling the engagement or disengagement of the co-operative teething by means of an actuator provided on the engagement mechanism.

36. A method according to any of claims 28 to 35, wherein the measurement device comprises a footgauge and the object to be measured comprises a foot.