JP2009244248A - Scale and calipers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scale for measuring easily with high accuracy. <P>SOLUTION: The scale includes a ruler surface, main graduation for partitioning in an approximately parallel direction, and sub-graduation for dividing the main graduation in an oblique direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a scale for measurement.

  A conventional scale will be described with reference to FIG. A conventional scale 301 includes a ruler side 302 that is one side of a flat plate-like side surface and serves as a measurement reference, a first main scale 303 that equally divides the ruler side 302 into a plurality of sections, and a first main scale 303. Furthermore, it comprises a second main scale 304 that is equally divided. The interval of one scale of the first main scale 303 in FIG. 8 is 1 cm, and the interval of 1 scale of the second main scale 304 is 1 mm obtained by dividing 1 cm into 10 parts.

  Since the resolution of the conventional scale 301 is limited to one graduation interval of the second main graduation, there is a problem that the length cannot be measured accurately with an accuracy equal to or less than the one graduation interval of the second main graduation. . For example, a case where the position of the measurement line 7 to be measured is measured with the scale 301 in FIG. 10 will be described. The measurement line 7 is only found to be between 5 mm and 6 mm, and an accurate position cannot be measured. Further, even if the interval between the second main scales is made fine, the scale lines and scales also have widths, and the scales cannot be divided at intervals less than these widths. That is, it was difficult to measure with an accuracy of 0.1 mm below the normal scale line equal width.

  In addition, as a method of measuring with accuracy below the scale of the conventional scale 301, there is a method of using a vernier used in calipers or the like, but it requires skillful techniques for use and can be easily measured. could not.

    The present invention provides a scale that can easily and accurately measure a distance.

  The scale according to the present invention is a scale having at least one flat side surface, and is equally divided into a plurality of ruler sides that are one side of the flat plate side surface and serve as a measurement reference, and a predetermined interval between the ruler sides. As described above, the first scale provided in an oblique direction with respect to the ruler side is provided.

  A second scale that equally divides the ruler side into a plurality of parts at intervals wider than the first scale may be provided, and the first scale may be configured to equally divide a predetermined interval of the second main scale into a plurality of parts.

  An auxiliary line that forms an angle θ (0 ° <θ <90 °) with the ruler side may be provided, and the first scale may be provided on the auxiliary line.

  A plurality of first reference lines that are parallel to the ruler side and provided at equal intervals, and a second reference line that intersects the first reference line at a predetermined angle θ (0 ° <θ <90 °), It is good also as a structure which makes a 1st scale the intersection of a 1st reference line and a 2nd reference line.

There are (n-1) intersections (n> 1) of one second reference line and a plurality of first reference lines, the length of the second reference line is L1, and one second reference line When the predetermined interval at which the intersection of the line and the plurality of first reference lines is equally divided into n (n> 1) is L2,
L1 = L2 / cos θ (0 ° <θ <90 °)
Is established.

  Having at least one flat side surface, a ruler side that is one side of the side surface and serving as a measurement reference, a plurality of first reference lines that are parallel to the ruler side and provided at equal intervals; A second reference line that intersects with the reference line at an angle θ (0 ° <θ <90 °), and the ruler side is predetermined at the intersection of one second reference line and a plurality of first reference lines. The interval L2 may be equally divided into a plurality of intervals.

  A second scale that equally divides the ruler side into a plurality of parts is provided, and an intersection of one second reference line and a plurality of first reference lines equally divides the predetermined interval L2 of the second scale into a plurality of parts. It is good also as a structure.

When (n-1) intersections of one second reference line and a plurality of first reference lines are provided, and the length of the second reference line is L1,
L1 = L2 / cos θ (0 ° <θ <90 °)
And the predetermined interval L2 may be equally divided into n.

  The caliper of the present invention has at least one flat side surface, the main ruler side that is one side of this side surface and serves as a measurement reference, and the predetermined interval between the main ruler sides is divided into a plurality of equal parts. A main body having a first scale provided in an oblique direction with respect to the main ruler side, and a second scale that equally divides the main ruler side into a plurality of parts at a wider interval than the first scale; When the outer measurement surface, the inner measurement surface or the depth measurement depth spar is closed on the transparent plate, the movable portion having the vernier ruler side and the transparent plate made of a transparent member, the second scale “ A vernier line perpendicular to the vernier ruler side is provided at a position coinciding with the position of “0”, and the movable ruler side of the movable ruler is parallel to the vernier ruler side. It slides with respect to a main-body part.

  In the scale of the present invention, since the first scale (sub-scale) is provided obliquely with respect to the ruler side, the scale interval can be made longer than the scale provided in the direction parallel to the ruler side. Visual measurement becomes easy.

  Further, the first graduation (sub graduation) enables measurement with an accuracy equal to or smaller than the second graduation (main graduation) interval.

BEST MODE FOR CARRYING OUT THE INVENTION

    Hereinafter, embodiments of the present invention will be described with reference to the drawings. The contents shown in the drawings and the following description are merely examples and do not limit the scope of the present invention.

(First embodiment)
The scale according to the first embodiment includes a secondary scale provided in an oblique direction with respect to the ruler side so as to divide the predetermined interval of the ruler side into a plurality of equal parts. Here, the ruler side means a straight line which is one side of a flat plate-like side surface and is a measurement reference in a scale having at least one flat plate-like side surface. This is the so-called edge of scale measurement.

  By providing the secondary scale in an oblique direction with respect to the ruler side, the interval between the scales can be made longer than when the scale is provided in a direction parallel to the ruler side, and visual measurement is facilitated.

  The configuration of the first embodiment will be described in more detail with reference to FIG. 1 and FIG. 2 which is an enlarged view thereof. The scale 1 includes at least one flat side surface. One side of the flat side surface is the ruler side 2. The ruler side 2 is a straight line and serves as a measurement reference.

  The first main scale 3 equally divides the ruler edge every 1 cm. The 1-scale interval of the second main scale 4 is 1 mm obtained by dividing the 1-cm interval of the first main scale 3 into 10 equal parts. The first main scale 3 and the second main scale 4 are hereinafter collectively referred to as “main scale”.

  The auxiliary line 5 is a straight line, and a plurality of auxiliary lines 5 are provided in parallel with the ruler side 2 at an angle θ (0 ° <θ <90 °). In FIG. 1, the main scale 3 is provided every 2 mm from the scale “0”. Nine sub-scales 6 are provided on the same auxiliary line 5 at equal intervals, and divide the auxiliary line 5 into ten equal parts. The sub-scale 6 is a scale indicating 0.2 mm obtained by dividing the distance 2 mm in the direction of the ruler side 2 into 10 equal parts. The auxiliary line 5 is for providing the sub-scale 6 and is not always necessary.

  In FIG. 2, sub-scales 6-a and 6-b are drawn, and the sub-scale 6 will be described by taking these two sub-scales as an example.

  The sub-scales 6-a and 6-b are provided on the auxiliary line 5 that forms an angle θ with the ruler side 2 with a distance l1. This distance l1 is an interval between the sub-scales 6 on the same auxiliary line 5.

  The projection point 6 ′ -a is a point obtained by projecting the secondary scale 6-a perpendicularly to the ruler side 2. The projection point 6 ′ -b is a point obtained by projecting the secondary scale 6-b perpendicularly to the ruler side 2. Let the distance between the projection points 6'-a and 6'-b be l2.

  The minor scales 6-a and 6-b divide the ruler side 2 into a distance l2 by projection points 6'-a and 6'-b. Since the secondary scale 6 is provided on the auxiliary line 5 at equal intervals 11, the secondary scale 6 equally divides a predetermined interval of the ruler side 2 into intervals 12. This means that the sub-scale 6 is provided in an oblique direction with respect to the ruler side 2 so as to equally divide the predetermined interval of the ruler side 2 into a plurality.

Between the distance l1 between the minor scales 6-a and 6-b, the distance l2 between the projection points 6′-a and 6′-b, and the angle θ between the ruler side 2 and the auxiliary line 5,
l1 = l2 / cosθ
Since cos θ is smaller than 1, l1> l2.

  By providing the secondary scale 6 in an oblique direction with respect to the ruler side 2, when dividing the ruler side 2 into the distance l2, the scale interval of the secondary scale 6 can be made longer than l2. This configuration facilitates visual observation during measurement. Further, even if the distance l2 is reduced to 1 mm or less, the secondary scale 6 can be provided.

  In the first embodiment, the distance of the ruler side 2 equally divided by the secondary scale 6 is 2 mm, and the secondary scale 6 divides the auxiliary line 5 into 10 equal parts, so the distance 12 is 0.2 mm.

  Consider the case of measuring the position of the measurement line 7 to be measured with the scale 1 in FIG. The measurement line 7 is located between 5 mm and 6 mm of the second main scale 4 and is counted from the position of the scale “0” of the first main scale 3 to the eighth sub scale of the third auxiliary line 5. Since it intersects with 6, it can be seen that it is 5.6 mm. As described above, the first main scale 3, the second main scale 4, and the sub scale 6 can be measured with higher accuracy than the second main scale 4. In addition, it cannot be overemphasized that the object measured with the scale 1 of this embodiment is not restricted to the distance of a point and a straight line, and may be the distance of a point and a point.

  In addition, the main scales 3 and 4 of this embodiment are not essential components. For example, if the ruler side 2 and the minor scale 6 are provided, the present invention includes a scale that equally divides a predetermined interval of the ruler side 2. If the secondary scale 6 is provided in an oblique direction with respect to the ruler side 2, the scale interval can be made longer than that provided in the direction parallel to the ruler side 2, and visual observation is facilitated.

  A scale having at least one of the first main scale 3 and the second main scale 4 is also included in the present invention. The main scales 3 and 4 are for assisting the measurement, and may be selectively provided according to the measurement target.

  Further, the scale interval, the number, and the like of the main scales 3 and 4 and the secondary scale 6 can be appropriately changed by those skilled in the art depending on the measurement target, and are not limited to the present embodiment.

(Second Embodiment)
The scale according to the second embodiment includes a first reference line that is parallel to the ruler side and provided at equal intervals, and a second reference line that intersects the first reference line at an angle θ (0 ° <θ <90 °). A reference line is provided, and an intersection of the first reference line and the second reference line is a scale that functions as a sub-scale in the first embodiment. That is, the intersection of the first reference line and the second reference line equally divides the predetermined interval of the ruler side. Here, the ruler side means a straight line which is one side of a flat plate-like side surface and is a measurement reference in a scale having at least one flat plate-like side surface.

A case where the predetermined interval L2 of the ruler side is equally divided into n (n is a natural number) will be described. A plurality of first reference lines are provided at regular intervals parallel to the ruler side. There are at least (n-1) intersections between one second reference line and a plurality of first reference lines. This intersection point functions as a sub-scale of the first embodiment that equally divides the predetermined interval L2 of the ruler side into n pieces. The number of the first reference lines may be provided so as to equally divide one second reference line into n, and the design can be changed as appropriate. Note that a first reference line may be further provided so as to be in contact with at least one end of one second reference line. When the length of the second reference line is L1,
L1 = L2 / cos θ
Since cos θ is smaller than 1, L1> L2.

  If the first reference line that contacts one end of the second reference line and the ruler side are combined, the number of first reference lines can be reduced by one. Further, if the first reference line in contact with one end of the second reference line is combined with the side facing the ruler side, the number of first reference lines can be reduced by one.

  Since a plurality of first reference lines parallel to the ruler side are provided at equal intervals, it is easy to confirm the position of the measurement target and the scale. When measuring, it is necessary to place the measurement line and the ruler side at right angles, but the measurement line and the ruler side may deviate from the right angle. At this time, if first reference lines parallel to the ruler side are provided at equal intervals, not only the positional relationship between the ruler side and the measurement line, but also the positions of the individual first reference lines and the measurement lines. The relationship (whether it is a right angle) can be confirmed, and the scale can be arranged more accurately so that the measurement line and the ruler side are at a right angle. In addition, when the arrangement of the ruler side and the measurement line is deviated from a right angle, the deviation of this angle seems to increase as the distance from the ruler side increases. Finding the angular deviation is facilitated by the intersection of the first reference line and the measurement line that are farther from the ruler side.

  The second embodiment will be described in more detail with reference to FIG. The main scale 13 equally divides the ruler side 12 every 5 mm. And the value of the main scale is displayed large every 10 mm interval. Eleven first reference lines 14 are provided at regular intervals in parallel to the ruler side 12. A plurality of second reference lines 15 are provided in parallel at intervals of 0 to 2 mm from the main scale 13.

  The intersection 16 between the first reference line 14 and the second reference line 15 functions as a scale having a 0.2 mm interval that equally divides the interval 2 mm between the ruler side 12 and the main scale 13 into 10 pieces.

  Consider the case where the position of the measurement line 7 to be measured is measured with the scale 11 in FIG. It can be seen from the second reference line 15 and the main scale 13 that the measurement line 7 is between 16 mm and 18 mm. Next, on the second reference line of 16 mm, the measurement line 7 is crossed between the first intersection and the second intersection from the ruler side 12. Since the distance between the intersections of the second reference points is 0.2 mm, the middle between the first intersection and the second intersection from the ruler side 12 is 0.3 mm. From this, it can be seen that the position of the measurement line 7 is 16.3 mm.

  The main scale 13 of this embodiment is only for facilitating measurement and is not an essential component. In other words, if the ruler side 12, the first reference line 14, and the second reference line 15 are provided, the intersection of the first reference line 14 and the second reference line 15 is the subordinate of the first embodiment. It functions as a scale and can be measured. Moreover, the space | interval of the main scale 13, the number, a display method, the angle (theta) of a 1st reference line 14 and a 2nd reference line, a space | interval, etc. can be designed suitably by those skilled in the art according to a measuring object. It is not limited to the embodiment.

    Also, counting from the side closer to the ruler side 12 of the scale 11 in FIG. 3, the first first reference line 14 and the eleventh first reference line 14 are in contact with both ends of the second reference line 15. In the configuration, when the accuracy of the scale printing on the scale 11 is poor, the scale position may be difficult to read. That is, when the both ends of the second reference line 15 are not printed clearly, the intersection between the both ends 15 of the second reference line and the first reference line is not known, and the scale cannot be read. Therefore, a configuration in which the first reference line 14 of the first and the first reference line 14 of the eleventh and the second reference line 15 intersect may be used. With this configuration, it is possible to reduce the possibility that the reading accuracy depends on the accuracy of the scale printing.

(Third embodiment)
The configuration of the third embodiment is basically the same as that of the second embodiment, and is different only in that a third reference line 17 is provided. Hereinafter, description of the same configuration as that of the second embodiment is omitted. The third reference line forms an angle (180 ° −θ) with the ruler side and the first reference line (0 ° <θ <90 °). The intersection of the first reference line and the third reference line also functions as a sub-scale of the first embodiment that equally divides the predetermined interval of the ruler side into a plurality of parts.

  The third reference line is provided symmetrically with the second reference line. Therefore, the intersection (1, 2) between the first reference line and the second reference line and the intersection (1, 3) between the first reference line and the third reference line are also symmetrical with each other. Functions as a minor scale.

  In the case of the scale of the third embodiment, there are two intersections between the reference lines representing one sub-scale, the intersection (1, 2) and the intersection (1, 3). Since these two intersecting points exist perpendicularly to the ruler side, the measurement line is aligned with the two intersecting points at the time of measurement, so that the measurement line can be easily arranged perpendicular to the ruler side. There is.

  Consider the case of measuring the position of the measurement line 7 to be measured with the scale 11 in FIG. It can be seen from the second reference line 15, the third reference line 16, and the main scale 13 that the measurement line 7 is between 16 mm and 18 mm. Since the measurement line 7 and the second reference line intersect in the middle between the first intersection and the second intersection from the ruler side 12, the measurement line 7 and the second reference line are at a position of 16.3 mm obtained by adding 0.3 mm to 16 mm. I know that there is. Further, since the measurement line 7 and the third reference line 16 intersect each other between the eighth intersection and the ninth intersection from the ruler side 12, 16.3 mm obtained by subtracting 1.7 mm from 18 mm. It can be seen that

  When the measurement line 7 to be measured is perpendicular to the ruler side 12, the measurement line 7 intersects both the intersection (1, 2) and the intersection (1, 3). By checking whether the measurement line 7 intersects both the intersection (1, 2) and the intersection (1, 3), the measurement line 7 is arranged perpendicular to the ruler side 12 (measurement line 7 and ruler side). It is possible to confirm whether or not the scale 11 is arranged so that it intersects with the right angle 12. Thereby, it becomes easy to arrange the ruler side 12 at right angles to the measurement line 7, and as a result, accurate measurement is possible.

(Fourth embodiment)
The fourth embodiment relates to a vernier caliper composed of a main body portion having a main scale and a movable portion having a vernier line.

  As in the second embodiment, the main body portion has a first reference line parallel to the ruler side and a second reference line, and the intersection of the first reference line and the second reference line is The main scale functions as a secondary scale of the second embodiment provided in an oblique direction so as to be equally divided. Hereinafter, a scale formed by the intersection of the first reference line and the second reference line is referred to as a secondary scale.

  When the movable part is slid along the body part, the movable part includes a transparent plate that overlaps the surface when the main scale is marked. On the transparent plate, a vernier line drawn perpendicularly to the vernier ruler side is drawn at the position of the scale “0”. The transparent plate is made of a transparent material, and when the main body portion and the movable portion are overlapped, the main scale and the minor scale on the main body under the transparent plate can be read from the movable portion.

  A movable part is slid with respect to a main-body part, and the length of what was pinched | interposed by the outer side measurement surface or the inner side measurement surface is measured from the intersection of a main scale or a minor scale, and a vernier line. If the number and interval of the first reference line and the second reference line of the main body are the same as those in the second embodiment, the intersection of the first reference line and the second reference line is 0.2 mm. The scale according to the present embodiment actually has a resolution of 0.2 mm or less.

  In the conventional scale, the position of the movable scale vernier scale “0” and the value in units of 1 mm are determined from the main scale (first step), and the main scale and the vernier scale are in a straight line. A value of 0.1 mm or less was determined (second step) and measured. In the caliper of the fourth embodiment, the main scale formed by the intersection of the first reference line and the second reference line functions as a scale of 1 mm or less, and the intersection of the scale and the sub-scale line of the movable portion. Can be measured with an accuracy of 1 mm or less. That is, the caliper of the fourth embodiment can be measured with an accuracy of 1 mm or less without going through the conventional second step.

  The fourth embodiment will be described in more detail with reference to FIGS. FIG. 5 is an overall view of a caliper 100 according to the fourth embodiment. The caliper 100 according to the fourth embodiment is different from the caliper 100 except that the main body 101 is provided with the first reference line 104 and the second reference line 105 and the movable part 110 is provided with the vernier 115. The configuration is the same as that of a conventional caliper, and includes an outer measurement surface 120 and an inner measurement surface 130 formed of a main body 101 and a movable portion 110.

  FIG. 6 is an overall view of the main body 101. The main body 101 includes a main scale 103 that equally divides the main ruler side 102 into 1 cm intervals, a first reference line 104, and a second reference line 105 as in the second embodiment. Yes. That is, the first reference line 104 is parallel to the main ruler side 102, and the second reference line 105 is at a predetermined angle with the main ruler side 102. The main ruler side 102 is one side of a flat side surface and is a straight line that serves as a measurement reference. As in the second embodiment, a plurality of second reference lines 105 are provided in parallel every 2 mm, and the first reference line 104 is provided so as to divide the second reference line 105 into ten equal parts. Yes. The intersection of the first reference line 104 and the second reference line 105 is a secondary scale scale 106 indicating 0.2 mm.

  FIG. 7 is an overall view of the movable unit 110. The movable part 110 includes a vernier ruler side 112 and a transparent plate 117. The minor ruler side 112 is a straight line that is parallel to the main ruler side 102 of the main body 101 when the main body 101 and the movable part 110 are overlapped. The transparent plate 117 is a transparent plate 117 on a flat plate that slides on the surface on which the main scale 103 and the secondary scale 106 are drawn.

  The transparent plate 117 is disposed so as to be sandwiched between one of the paired portions of the inner measurement surface 130 and the vernier ruler side 112. The minor ruler side 112 is arranged so as to be sandwiched between one of a pair of the transparent plate 117 and the outer measurement surface 120. Since the configuration of the outer measurement surface 120 and the inner measurement surface 130 is the same as that of a conventional caliper, the description thereof is omitted.

  Near the vernier ruler side 112, a vernier scale 113 with a scale of “0” is marked. A vernier line 115 is drawn on the transparent plate 117 at a position of the scale “0” of the vernier scale 113 so as to be perpendicular to the vernier ruler side 112. The movable portion 110 slides on the main body 101 so that the minor ruler side 112 is parallel to the main ruler side 102 of the main body 101. The position of the scale “0” of the minor scale 113 is the position of the scale “0” of the main scale 103 when the outer measurement surface, the inner measurement surface, or the depth measurement depth spar (not shown) is closed. Is the position that matches. Further, the scale “0” of the vernier scale 113 is not limited to the scale “0”, and may be anything that represents a position such as “▲”.

  A method of reading the scale with the caliper 100 of the fourth embodiment will be described with reference to FIG. FIG. 8 is an enlarged view of the caliper 100 when a measurement object (a measurement object is not shown in the drawing) is sandwiched between the outer measurement surfaces 120. The scale is read from the intersection of the major scale 115 and the major scale 103 or the minor scale 106. Since the second reference line 102 is drawn at intervals of 2 mm, the intersection of the vernier line 115 and the first first reference line 104 from the main ruler side 102 is 4.2 cm on the main scale. And 4.4 cm. Next, since the vernier line 115 intersects the third vernier scale 106 from the main ruler side 102 of the second reference line 105 of 4.2 cm, 0.2 mm × 3 = 0.6 mm at 4.2 cm. It can be seen that it is 4.26 cm. As described above, with the caliper of the fourth embodiment, the accuracy of 1 mm or less can be obtained only by reading the intersections between the vernier line 115 of the movable portion 110 and the main scale 103 and the main scale 106 of the main body 101. It can be measured, and the scale can be read more easily than conventional calipers.

(Application example of the present invention)
An example of how to use the scale of the present invention will be described with reference to FIG. The contents shown in the drawings and the following description are merely examples and do not limit the scope of the present invention.

  The scale of the present invention is convenient to use when observing at the auto level. The auto level is a machine that can compare the height difference between two points by keeping the telescope line of sight horizontal and observe the height of each point from the reference plane. The auto level telescope can be moved only to the left and right, and the height is adjusted by an elevator that moves up and down.

  In FIG. 8, a mark 201, a scale 202 of the present invention, and a measurement object 203 are drawn. A height h from the measured object 203 to the center position of the mark 201 is measured by an auto level. The scale 202 is arranged so that the edge near the scale “0” adjacent to the ruler side matches the reference plane of the measurement object 203. A circle, a scale, and a crosshair are drawn on the mark 201 so that the center can be easily understood.

  You can see the crosshairs when you look into the auto-level telescope. The cross of the cross line is aligned with the center (cross) of the mark 201 to adjust the height of the auto level. Next, the auto level is moved in the direction of the scale 202. Since the auto level moves in the horizontal direction while maintaining the height, the viewpoint can be moved on the scale 202 while maintaining the height of the horizontal line of the telescope. The height h can be measured with an accuracy of 1 mm or less by reading the horizontal line of the telescope and the intersection of the sub-scale of the scale 202.

  Even in the measurement using the transit that can move the telescope in the horizontal direction and the vertical direction, the scale of the present invention can be used to easily and accurately measure.

  If the scale of the present invention and the auto level or transit are used, it is possible to accurately position the mounted device with respect to the reference mark or reference line.

  The sub-scale of “Mode for Carrying Out the Invention” is the first scale of “Claims”, and the main scale of “Mode for Carrying Out the Invention” is “Claims”. This corresponds to the second scale.

The front view which shows the structure of the scale of 1st Embodiment. The front view which expanded the partial structure of the scale of 1st Embodiment. The front view which shows the scale structure of 2nd Embodiment. The front view which shows the scale structure of 3rd Embodiment. The front view which shows the structure of the caliper of 4th Embodiment. The front view which shows the structure of the main body part of the caliper of 4th Embodiment. The front view which shows the structure of the movable part of the caliper of 4th Embodiment. The figure explaining the measuring method with the caliper of 4th Embodiment. The figure explaining one example of the method of measuring with the scale of this invention. The front view which shows the scale of the conventional structure.

Explanation of symbols

1: scale, 2: ruler edge, 3: first main scale, 4: second main scale, 5: auxiliary line, 6: secondary scale, 7: measurement line,
111: Scale, 12: Ruler side, 13: Main scale, 14: First reference line, 15: Second reference line, 16: Intersection of the first reference line and the second reference line, 17: First 3 baselines,
100: vernier caliper, 101: main body, 102: main ruler side, 103: main scale, 104: first reference line, 105: second reference line, 106: minor scale, 110: movable part, 111 : Virtual rectangle, 112: vernier ruler side, 113: vernier scale, 115: vernier line, 117: transparent plate,
201: mark, 202: scale, 203: measurement object,
301: Conventional scale, 302: Ruler side, 303: First main scale, 304: Second main scale

Claims (9)

A scale having at least one flat side surface,
A ruler side that is one side of the flat plate-like side surface and serves as a measurement reference,
A scale comprising: a first scale provided in an oblique direction with respect to the ruler side so as to equally divide the predetermined interval of the ruler side into a plurality of parts. A second scale that equally divides the ruler side into a plurality of parts at a wider interval than the first scale is provided, and the first scale equally divides a predetermined interval of the second scale into a plurality of parts. Item 1. The scale according to item 1. An auxiliary line that forms an angle θ (0 ° <θ <90 °) with the ruler side;
The scale according to claim 1 or 2, wherein the first scale is provided on the auxiliary line. A plurality of first reference lines that are parallel to the ruler side and provided at equal intervals;
A first reference line and a second reference line that intersects at a predetermined angle θ (0 ° <θ <90 °), and the first scale is an intersection of the first reference line and the second reference line The scale according to claim 1 or 2, wherein (N-1) intersections (n> 1) of one second reference line and a plurality of first reference lines are provided,
The length of the second reference line is L1,
When the predetermined interval at which the intersection of one second reference line and a plurality of first reference lines is equally divided into n is L2,
L1 = L2 / cos θ (0 ° <θ <90 °)
The scale according to claim 4, wherein: A ruler side that has at least one flat side surface and is one side of the side surface and serves as a measurement reference;
A first reference line parallel to the ruler side and provided at a plurality of equal intervals;
A first reference line and a second reference line intersecting at an angle θ (0 ° <θ <90 °), and the ruler at an intersection of one second reference line and a plurality of first reference lines. A scale characterized by equally dividing a predetermined interval L2 of the side into a plurality. A second scale for equally dividing the ruler edge into a plurality of parts;
The scale according to claim 6, wherein the intersection of one second reference line and a plurality of first reference lines equally divides the predetermined interval L2 of the second scale into a plurality of parts. (N-1) intersections (n> 1) of one second reference line and a plurality of first reference lines are provided,
When the length of the second reference line is L1,
L1 = L2 / cos θ
The scale according to claim 6 or 7, wherein the predetermined interval L2 is equally divided into n. A main ruler side that has at least one flat side surface and is a side of the side surface that serves as a measurement reference;
A first scale provided in an oblique direction with respect to the main ruler side so as to equally divide the predetermined interval of the main ruler side into a plurality of parts;
A main body having a second scale that equally divides the main ruler edge into a plurality of sections at intervals wider than the first scale;
The vernier ruler side,
A movable part having a transparent plate made of a transparent member;
The transparent plate is provided at a position that coincides with the position of “0” of the second scale when the outer measurement surface, the inner measurement surface, or the depth measurement depth spar is closed. With vertical vernier lines,
The caliper characterized in that the movable portion slides relative to the main body so that the main ruler side and the vernier ruler side are parallel to each other.

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