Summary of the invention
The present invention is based at least one above-mentioned technical problem, proposes a kind of measurement method, by default in shooting
Interface generates virtual ruler, so that mobile phone user does not need to carry ruler yet and can fast and accurately measure the ruler of object
It is very little, improve the accuracy and convenience of measurement.
Realize that above-mentioned purpose provides a kind of measurement method, the measurement according to the embodiment of the first aspect of the invention
Method includes: the shooting preview interface display virtual ruler in the terminal, and the virtual ruler is for measuring in the shooting
The size of the subject shown in preview interface;The terminal and the subject are determined by the range sensor
The distance between body value;According to the corresponding relationship between the distance value and scale bar prestored, obtain with the terminal that determines with
The distance between described subject is worth corresponding scale bar, wherein the scale bar is the reference of the subject
Ratio value between size and the actual size of subject;It is carved according to the display that the scale bar adjusts the virtual ruler
Angle value, so that the size for the subject that the virtual ruler is shown in the preview interface is the subject
The actual size of body.
In the technical scheme, measured object is obtained by mobile phone or the photographing device of other terminals with camera function
The picture of body improves survey so that mobile phone user does not need to carry ruler yet and can fast and accurately measure the size of object
The accuracy and convenience of amount.
Specifically, the camera of mobile phone is automatically opened when measuring size function of mobile phone of starting in mobile phone, and
Display one is virtual ruler on display interface of mobile phone, and has two options of angle measurement and linear measure longimetry, passes through camera
Capture function make testee picture appear in virtual ruler appearance region, allow to measure by virtual ruler
Testee the picture of mobile phone preview interface size, then by range sensor measure mobile phone and testee away from
From making it possible to calculate the actual size of testee, need to carry graduated scale or compasses so as to avoid people
The problem of, and manual measurement bring error is avoided, improve the accuracy of measurement.
Wherein, range sensor includes infrared distance measuring from sensor, optical displacement sensor, linear proximity sensor
With ultrasonic displacement sensor etc., specifically, infrared distance measuring is and to measure this light pulse by emitting light pulse from sensor
From the time being reflected by the object back is emitted to, by reaching the measurement adjusted the distance to the measurement of time;Optical displacement passes
The light of each pixel when sensor is by the luminous point light beam projecting to light receiving element on test object object respectively, and convert
For distance;Linear proximity sensor used the changed measurement of magnetic induction to measure the distance displacement as object;Ultrasonic displacement sensing
Device is to calculate distance by calculating ultrasonic wave from the time required for reception is sent to.
In the above-mentioned technical solutions, it is preferable that further include: the touch movement for receiving user for the virtual ruler refers to
It enables;Display position of the virtual ruler in the shooting preview interface is adjusted according to the touch move.
In the technical scheme, by the way that the display position of virtual ruler is adjusted according to touch move, into one
Step improve the flexibility of virtual ruler in use, for example, user found in shooting preview interface it is to be measured right
As when, the borderline region of virtual ruler to display interface can be dragged, and after the lookup that user completes object to be measured, dragging
Virtual ruler to object to be measured measurement position, to quickly read measurement data.
In the above-mentioned technical solutions, it is preferable that further include: the zoom control for receiving user for the virtual ruler refers to
It enables;Display scale of the virtual ruler in the shooting preview interface is adjusted according to zoom control instruction.
In the technical scheme, by the way that the display scale of virtual ruler is adjusted according to zoom control instruction, into one
When the full scale of virtual ruler is larger, unit scales value is also larger by the accuracy for improving measurement to step namely user, such as right
The height of base station measures about 50 meters, and unit scales are 5 meters, and the zero graduation of virtual ruler is being directed at base station bottom
When, when needing to read corresponding scale at the top of base station, it can be instructed by zoom control and further amplify virtual ruler, so that
The unit scales of virtual ruler are further accurate to 1 meter, 0.5 meter, 0.1 meter etc., during scaling virtual ruler, virtually
The relative position of scale and object to be measured does not change, to guarantee the accuracy of measurement.
In the above-mentioned technical solutions, it is preferable that further include: the terminal and the quilt are determined by the range sensor
The distance between object value is shot, specifically includes the following steps: selecting one in the shooting preview interface according to user instructions
A object, and be determined as the subject and carry out focusing process;Judge whether to complete the focusing to the subject
Processing;When determining to complete the focusing process to the subject, the range sensor is controlled to the terminal and institute
The distance between subject is stated to measure.
In the technical scheme, it by first carrying out focusing process to object to be measured, can be effectively avoided when mobile phone pair
When burnt unsuccessful, caused by the problem of measurement accuracy is not high or measuring error, when mobile phone detects the focusing to testee
When processing has been completed, range sensor measurement mobile phone is reused at a distance from testee, further increases measurement number
The accuracy of value.
In the above-mentioned technical solutions, it is preferable that the display scale value that the virtual ruler is adjusted according to the scale bar makes
The size for obtaining the subject that the virtual ruler is shown in the preview interface is the reality of the subject
Border size, comprising the following specific steps after the display scale value for adjusting the virtual ruler according to the scale bar, according to pre-
If display parameters adjust the display parameters of the virtual ruler, to highlight the virtual mark in the shooting preview interface
The display scale value of ruler.
In the technical scheme, after the adjusting of completed percentage ruler, by adjusting virtual ruler according to predetermined display parameter
Display parameters, wherein scale bar is adjusted so that ratio between the size and actual size of subject is 1:1, is completed
After scale bar is adjusted, the display parameters of virtual ruler are adjusted to highlight to user, for example, improving the brightness of virtual ruler
Value, coloration and saturation degree, and/or the contrast for improving virtual ruler and desktop etc. operate.
According to the second aspect of the invention, it is also proposed that a kind of measuring system, the measuring system include: display unit,
Virtual ruler is shown for the shooting preview interface in the terminal, and the virtual ruler is for measuring in shooting preview circle
The size of the subject shown in face;Determination unit, for by the range sensor determine the terminal with it is described
The distance between subject value;Acquiring unit, for obtaining according to the corresponding relationship between the distance value and scale bar prestored
The corresponding scale bar of the distance between the terminal and the subject for taking and determining value, wherein the scale bar is
Ratio value between the reference dimension of the subject and the actual size of subject;Unit is adjusted, basis is used for
The scale bar adjusts the display scale value of the virtual ruler, so that the virtual ruler was shown in the preview interface
The size of the subject is the actual size of the subject.
In the technical scheme, measured object is obtained by mobile phone or the photographing device of other terminals with camera function
The picture of body improves survey so that mobile phone user does not need to carry ruler yet and can fast and accurately measure the size of object
The accuracy and convenience of amount.
Specifically, the camera of mobile phone is automatically opened when measuring size function of mobile phone of starting in mobile phone, and
Display one is virtual ruler on display interface of mobile phone, and has two options of angle measurement and linear measure longimetry, passes through camera
Capture function make testee picture appear in virtual ruler appearance region, allow to measure by virtual ruler
Testee the picture of mobile phone preview interface size, then by range sensor measure mobile phone and testee away from
From making it possible to calculate the actual size of testee, need to carry graduated scale or compasses so as to avoid people
The problem of, and manual measurement bring error is avoided, improve the accuracy of measurement.
Wherein, range sensor includes infrared distance measuring from sensor, optical displacement sensor, linear proximity sensor
With ultrasonic displacement sensor etc., specifically, infrared distance measuring is and to measure this light pulse by emitting light pulse from sensor
From the time being reflected by the object back is emitted to, by reaching the measurement adjusted the distance to the measurement of time;Optical displacement passes
The light of each pixel when sensor is by the luminous point light beam projecting to light receiving element on test object object respectively, and convert
For distance;Linear proximity sensor used the changed measurement of magnetic induction to measure the distance displacement as object;Ultrasonic displacement sensing
Device is to calculate distance by calculating ultrasonic wave from the time required for reception is sent to.
In the above-mentioned technical solutions, it is preferable that further include: the first receiving unit, for receiving user for described virtual
The touch move of scale;The adjusting unit is also used to: being adjusted the virtual ruler according to the touch move and is existed
Display position in the shooting preview interface.
In the technical scheme, by the way that the display position of virtual ruler is adjusted according to touch move, into one
Step improve the flexibility of virtual ruler in use, for example, user found in shooting preview interface it is to be measured right
As when, the borderline region of virtual ruler to display interface can be dragged, and after the lookup that user completes object to be measured, dragging
Virtual ruler to object to be measured measurement position, to quickly read measurement data.
In the above-mentioned technical solutions, it is preferable that further include: the second receiving unit, for receiving user for described virtual
The zoom control of scale instructs;The adjusting unit is also used to: being adjusted the virtual ruler according to zoom control instruction and is existed
Display scale in the shooting preview interface.
In the technical scheme, by the way that the display scale of virtual ruler is adjusted according to zoom control instruction, into one
When the full scale of virtual ruler is larger, unit scales value is also larger by the accuracy for improving measurement to step namely user, such as right
The height of base station measures about 50 meters, and unit scales are 5 meters, and the zero graduation of virtual ruler is being directed at base station bottom
When, when needing to read corresponding scale at the top of base station, it can be instructed by zoom control and further amplify virtual ruler, so that
The unit scales of virtual ruler are further accurate to 1 meter, 0.5 meter, 0.1 meter etc., during scaling virtual ruler, virtually
The relative position of scale and object to be measured does not change, to guarantee the accuracy of measurement.
In the above-mentioned technical solutions, it is preferable that further include: focusing unit, for selecting the shooting according to user instructions
An object in preview interface, and be determined as the subject and carry out focusing process;Judging unit, for judging whether
Complete the focusing process to the subject;Control unit, for determining to complete the focusing to the subject
When processing, controls the range sensor and the distance between the terminal and the subject are measured.
In the technical scheme, it by first carrying out focusing process to object to be measured, can be effectively avoided when mobile phone pair
When burnt unsuccessful, caused by the problem of measurement accuracy is not high or measuring error, when mobile phone detects the focusing to testee
When processing has been completed, range sensor measurement mobile phone is reused at a distance from testee, further increases measurement number
The accuracy of value.
In the above-mentioned technical solutions, it is preferable that the adjusting unit is also used to: the void is being adjusted according to the scale bar
After the display scale value of quasi- scale, the display parameters of the virtual ruler are adjusted according to predetermined display parameter, in the shooting
The display scale value of the virtual ruler is highlighted in preview interface.
In the technical scheme, after the adjusting of completed percentage ruler, by adjusting virtual ruler according to predetermined display parameter
Display parameters, wherein scale bar is adjusted so that ratio between the size and actual size of subject is 1:1, is completed
After scale bar is adjusted, the display parameters of virtual ruler are adjusted to highlight to user, for example, improving the brightness of virtual ruler
Value, coloration and saturation degree, and/or the contrast for improving virtual ruler and desktop etc. operate.
By above technical scheme, by generating virtual ruler shooting default interface so that mobile phone user do not need with
Body, which carries ruler, also can fast and accurately measure the size of object, improve the accuracy and convenience of measurement.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
It is illustrated below with reference to measurement scheme of the Fig. 1 to Fig. 5 B to embodiment according to the present invention.
As shown in Figure 1, according to the embodiment of the first aspect of the invention, providing a kind of measurement method, the measurement side
Method includes: step 102, shows virtual ruler in the shooting preview interface of the terminal, the virtual ruler is for measuring in institute
State the size of the subject shown in shooting preview interface;Step 104, the terminal is determined by the range sensor
The distance between described subject value;Step 106, according to the corresponding relationship between the distance value and scale bar prestored,
Obtain the corresponding scale bar of the distance between the terminal and the subject of determination value, wherein the scale bar
For the ratio value between the reference dimension of the subject and the actual size of subject;Step 108, according to described
Scale bar adjusts the display scale value of the virtual ruler, so that described in the virtual ruler shows in the preview interface
The size of subject is the actual size of the subject.
In the technical scheme, measured object is obtained by mobile phone or the photographing device of other terminals with camera function
The picture of body improves survey so that mobile phone user does not need to carry ruler yet and can fast and accurately measure the size of object
The accuracy and convenience of amount.
Specifically, the camera of mobile phone is automatically opened when measuring size function of mobile phone of starting in mobile phone, and
Display one is virtual ruler on display interface of mobile phone, and has two options of angle measurement and linear measure longimetry, passes through camera
Capture function make testee picture appear in virtual ruler appearance region, allow to measure by virtual ruler
Testee the picture of mobile phone preview interface size, then by range sensor measure mobile phone and testee away from
From making it possible to calculate the actual size of testee, need to carry graduated scale or compasses so as to avoid people
The problem of, and manual measurement bring error is avoided, improve the accuracy of measurement.
Wherein, range sensor includes infrared distance measuring from sensor, optical displacement sensor, linear proximity sensor
With ultrasonic displacement sensor etc., specifically, infrared distance measuring is and to measure this light pulse by emitting light pulse from sensor
From the time being reflected by the object back is emitted to, by reaching the measurement adjusted the distance to the measurement of time;Optical displacement passes
The light of each pixel when sensor is by the luminous point light beam projecting to light receiving element on test object object respectively, and convert
For distance;Linear proximity sensor used the changed measurement of magnetic induction to measure the distance displacement as object;Ultrasonic displacement sensing
Device is to calculate distance by calculating ultrasonic wave from the time required for reception is sent to.
In the above-mentioned technical solutions, it is preferable that further include: the touch movement for receiving user for the virtual ruler refers to
It enables;Display position of the virtual ruler in the shooting preview interface is adjusted according to the touch move.
In the technical scheme, by the way that the display position of virtual ruler is adjusted according to touch move, into one
Step improve the flexibility of virtual ruler in use, for example, user found in shooting preview interface it is to be measured right
As when, the borderline region of virtual ruler to display interface can be dragged, and after the lookup that user completes object to be measured, dragging
Virtual ruler to object to be measured measurement position, to quickly read measurement data.
In the above-mentioned technical solutions, it is preferable that further include: the zoom control for receiving user for the virtual ruler refers to
It enables;Display scale of the virtual ruler in the shooting preview interface is adjusted according to zoom control instruction.
In the technical scheme, by the way that the display scale of virtual ruler is adjusted according to zoom control instruction, into one
When the full scale of virtual ruler is larger, unit scales value is also larger by the accuracy for improving measurement to step namely user, such as right
The height of base station measures about 50 meters, and unit scales are 5 meters, and the zero graduation of virtual ruler is being directed at base station bottom
When, when needing to read corresponding scale at the top of base station, it can be instructed by zoom control and further amplify virtual ruler, so that
The unit scales of virtual ruler are further accurate to 1 meter, 0.5 meter, 0.1 meter etc., during scaling virtual ruler, virtually
The relative position of scale and object to be measured does not change, to guarantee the accuracy of measurement.
As shown in Figure 5A, in shooting preview interface, image ratio is 1000:1, and the reference that virtual ruler measures base station is high
Degree is 5cm, learns that base station height is 50m according to ratio calculating, unit scales are 10 meters at this time, and user is referred to by zoom control
Order is when amplifying virtual ruler, at this point, as shown in Figure 5 B, the unit scales of virtual ruler are 2 meters, and then more accurately base station
Height is 48 meters.
In the above-mentioned technical solutions, it is preferable that further include: the terminal and the quilt are determined by the range sensor
The distance between object value is shot, specifically includes the following steps: selecting one in the shooting preview interface according to user instructions
A object, and be determined as the subject and carry out focusing process;Judge whether to complete the focusing to the subject
Processing;When determining to complete the focusing process to the subject, the range sensor is controlled to the terminal and institute
The distance between subject is stated to measure.
In the technical scheme, it by first carrying out focusing process to object to be measured, can be effectively avoided when mobile phone pair
When burnt unsuccessful, caused by the problem of measurement accuracy is not high or measuring error, when mobile phone detects the focusing to testee
When processing has been completed, range sensor measurement mobile phone is reused at a distance from testee, further increases measurement number
The accuracy of value.
In the above-mentioned technical solutions, it is preferable that the display scale value that the virtual ruler is adjusted according to the scale bar makes
The size for obtaining the subject that the virtual ruler is shown in the preview interface is the reality of the subject
Border size, comprising the following specific steps after the display scale value for adjusting the virtual ruler according to the scale bar, according to pre-
If display parameters adjust the display parameters of the virtual ruler, to highlight the virtual mark in the shooting preview interface
The display scale value of ruler.
In the technical scheme, after the adjusting of completed percentage ruler, by adjusting virtual ruler according to predetermined display parameter
Display parameters, wherein scale bar is adjusted so that ratio between the size and actual size of subject is 1:1, is completed
After scale bar is adjusted, the display parameters of virtual ruler are adjusted to highlight to user, for example, improving the brightness of virtual ruler
Value, coloration and saturation degree, and/or the contrast for improving virtual ruler and desktop etc. operate.
Fig. 2 shows the schematic block diagrams of the measuring system of embodiment according to the present invention.
As shown in Fig. 2, the measuring system 200 of embodiment according to the present invention: display unit 202, in the terminal
Shooting preview interface show that virtual ruler, the virtual ruler are used to measure being clapped of showing in the shooting preview interface
Take the photograph the size of object;Determination unit 204, for by the range sensor determine the terminal and the subject it
Between distance value;Acquiring unit 206, for obtaining and determining according to the corresponding relationship between the distance value and scale bar prestored
The corresponding scale bar of the distance between the terminal and the subject value, wherein the scale bar is described clapped
Take the photograph the ratio value between the reference dimension of object and the actual size of subject;Unit 208 is adjusted, for according to the ratio
Example ruler adjusts the display scale value of the virtual ruler, so that the quilt that the virtual ruler is shown in the preview interface
The size for shooting object is the actual size of the subject.
In the technical scheme, measured object is obtained by mobile phone or the photographing device of other terminals with camera function
The picture of body improves survey so that mobile phone user does not need to carry ruler yet and can fast and accurately measure the size of object
The accuracy and convenience of amount.
Specifically, the camera of mobile phone is automatically opened when measuring size function of mobile phone of starting in mobile phone, and
Display one is virtual ruler on display interface of mobile phone, and has two options of angle measurement and linear measure longimetry, passes through camera
Capture function make testee picture appear in virtual ruler appearance region, allow to measure by virtual ruler
Testee the picture of mobile phone preview interface size, then by range sensor measure mobile phone and testee away from
From making it possible to calculate the actual size of testee, need to carry graduated scale or compasses so as to avoid people
The problem of, and manual measurement bring error is avoided, improve the accuracy of measurement.
Wherein, range sensor includes infrared distance measuring from sensor, optical displacement sensor, linear proximity sensor
With ultrasonic displacement sensor etc., specifically, infrared distance measuring is and to measure this light pulse by emitting light pulse from sensor
From the time being reflected by the object back is emitted to, by reaching the measurement adjusted the distance to the measurement of time;Optical displacement passes
The light of each pixel when sensor is by the luminous point light beam projecting to light receiving element on test object object respectively, and convert
For distance;Linear proximity sensor used the changed measurement of magnetic induction to measure the distance displacement as object;Ultrasonic displacement sensing
Device is to calculate distance by calculating ultrasonic wave from the time required for reception is sent to.
In the above-mentioned technical solutions, it is preferable that further include: the first receiving unit 210, for receiving user for the void
The touch move of quasi- scale;The adjusting unit 208 is also used to: adjusting the virtual mark according to the touch move
Display position of the ruler in the shooting preview interface.
In the technical scheme, by the way that the display position of virtual ruler is adjusted according to touch move, into one
Step improve the flexibility of virtual ruler in use, for example, user found in shooting preview interface it is to be measured right
As when, the borderline region of virtual ruler to display interface can be dragged, and after the lookup that user completes object to be measured, dragging
Virtual ruler to object to be measured measurement position, to quickly read measurement data.
In the above-mentioned technical solutions, it is preferable that further include: the second receiving unit 212, for receiving user for the void
The zoom control instruction of quasi- scale;The adjusting unit 208 is also used to: adjusting the virtual mark according to zoom control instruction
Display scale of the ruler in the shooting preview interface.
In the technical scheme, by the way that the display scale of virtual ruler is adjusted according to zoom control instruction, into one
When the full scale of virtual ruler is larger, unit scales value is also larger by the accuracy for improving measurement to step namely user, such as right
The height of base station measures about 50 meters, and unit scales are 5 meters, and the zero graduation of virtual ruler is being directed at base station bottom
When, when needing to read corresponding scale at the top of base station, it can be instructed by zoom control and further amplify virtual ruler, so that
The unit scales of virtual ruler are further accurate to 1 meter, 0.5 meter, 0.1 meter etc., during scaling virtual ruler, virtually
The relative position of scale and object to be measured does not change, to guarantee the accuracy of measurement.
As shown in Figure 5A, in shooting preview interface, image ratio is 1000:1, and the reference that virtual ruler measures base station is high
Degree is 5cm, learns that base station height is 50m according to ratio calculating, unit scales are 10 meters at this time, and user is referred to by zoom control
Order is when amplifying virtual ruler, at this point, as shown in Figure 5 B, the unit scales of virtual ruler are 2 meters, and then more accurately base station
Height is 48 meters.
In the above-mentioned technical solutions, it is preferable that further include: focusing unit 214, for selecting the bat according to user instructions
An object in preview interface is taken the photograph, and is determined as the subject and carries out focusing process;Judging unit 216, for sentencing
The disconnected focusing process whether completed to the subject;Control unit 218, for determining to complete to the subject
When the focusing process of body, controls the range sensor and the distance between the terminal and the subject are surveyed
Amount.
In the technical scheme, it by first carrying out focusing process to object to be measured, can be effectively avoided when mobile phone pair
When burnt unsuccessful, caused by the problem of measurement accuracy is not high or measuring error, when mobile phone detects the focusing to testee
When processing has been completed, range sensor measurement mobile phone is reused at a distance from testee, further increases measurement number
The accuracy of value.
In the above-mentioned technical solutions, it is preferable that the adjusting unit 208 is also used to: institute is being adjusted according to the scale bar
After the display scale value for stating virtual ruler, the display parameters of the virtual ruler are adjusted according to predetermined display parameter, described
The display scale value of the virtual ruler is highlighted in shooting preview interface.
In the technical scheme, after the adjusting of completed percentage ruler, by adjusting virtual ruler according to predetermined display parameter
Display parameters, wherein scale bar is adjusted so that ratio between the size and actual size of subject is 1:1, is completed
After scale bar is adjusted, the display parameters of virtual ruler are adjusted to highlight to user, for example, improving the brightness of virtual ruler
Value, coloration and saturation degree, and/or the contrast for improving virtual ruler and desktop etc. operate.
Fig. 3 shows the schematic block diagram of the terminal of embodiment according to the present invention.
As shown in figure 3, according to the third aspect of the invention we, it is also proposed that a kind of terminal 300, comprising: any of the above-described skill
Measuring system 200 described in art scheme.
As shown in figure 4, in the above-mentioned technical solutions, it is preferable that according to the reference dimension a, the terminal and it is described to
The distance between measurement object L determines the actual size b of the object to be measured, specifically includes the following steps: according to the ginseng
Examine the distance between size a, the terminal and the object to be measured L determine the reference dimension and the actual size b it
Between ratio value;By the reference dimension a multiplied by the product of the ratio value, as the actual size b.
In the technical scheme, measured object is obtained by mobile phone or the photographing device of other terminals with camera function
The picture of body, such as in mobile phone, when measuring size function of mobile phone of starting, the camera of mobile phone is automatically opened, and in hand
Display one is virtual ruler on machine display interface, and has two options of angle measurement and linear measure longimetry, specifically, by taking the photograph
As the capture function of head make testee picture appear in virtual ruler appearance region, allow to survey by virtual ruler
Testee is measured in the size of the picture of mobile phone preview interface, it is assumed that the reference scale modest ability for the picture that mobile phone preview interface is shown
Degree is a, and measuring mobile phone at a distance from testee by range sensor is L, and due to that can pass through mobile phone camera lens
Mapping table determine image distance L1, therefore the actual size b, i.e. b=of testee can be calculated by corresponding mathematical method
AL/L1 allows users to the size for measuring object as ruler by the intrinsic hardware device of mobile phone, convenient, fast and quasi-
The true size for measuring testee.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, it is contemplated that how what the relevant technologies proposed designs one
The technical issues of planting convenience and accuracy of the new measurement scheme to improve measurement process, the invention proposes a kind of measurement sides
Case and a kind of terminal mention so that mobile phone user does not need to carry ruler yet and can fast and accurately measure the size of object
The high accuracy and convenience of measurement.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.