Welding Gauges

Abstract

To conduct dimensional measurement of an excess metal height of a weld bead of a weld area after butt-welding a pair of base materials and measure an excess metal height of a weld bead of a weld area, for example, and to smoothly and reliably perform sliding of a gauge body and a slide long body, and thereby, to reliably conduct dimensional measurement according to a reading index and a length scale, in order to improve measurement accuracy and enhance measuring workability.SOLUTION: A surface 1a of a gauge body 1 and a surface 2a of a slide long body 2 are in a flush state. The gauge body and the slide long body are arranged to be freely slidable according to a dovetail groove structure. A leaf spring L is interposed in a slide gap between the gauge body and the slide long body. A finger hooking protrusion body 3 is fixed and arranged on the surface of the slide long body.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a welding gauge used to measure the dimensions of a welded portion in various welding operations such as steel frame fabrication and steel frame construction. [Background technology]

[0002] Conventionally, as this type of welding gauge, there are known gauges of various structures and configurations for measuring the dimensions of a welded portion before, during and after welding.

[0003] Among these various welding gauges, there are many that have a structure in which the sliding scale is slid relative to the gauge body by the operator's finger, and the length scale and reading indicator are used to measure the dimensions of the welded area before, during, and after welding.

[0004] Here, dimensional measurements of the welded portion before, during, and after welding include, for example, measurements of the base material plate thickness, bevel angle, root face, root spacing, groove depth, and groove angle as dimensional measurements before welding; measurements of the undercut depth and overlap depth limits for pass / fail judgment as dimensional measurements during welding; and measurements of the welded portion after welding include measurements of the fillet throat thickness, leg length, excess weld height, and step measurements of the misalignment dimensions. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special Publication No. 34-4635 [Patent Document 2] Jikko No. 61-45983 [Patent Document 3] Patent No. 7411049 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the case of conventional structures having the sliding scale, when measuring the dimensions of the welded portion, the sliding scale is slid relative to the gauge body, the length scale and reading indicator are read, and the dimension of the welded portion is measured. Therefore, although it is desirable to not only speed up the reading of the length scale and the reading indicator, but also to make the sliding scale arranged on the gauge body slide smoothly, the surface of the sliding scale is smooth and flat, and the surface of the sliding scale is flush with the surface of the gauge body, so the measurer's fingers tend to slip along the surface of the sliding scale, making it difficult to push and pull the sliding scale. This results in a decrease in the ease of measuring the welded portion and a decrease in measurement accuracy due to human error associated with the sliding operation. [Means for solving the problem]

[0007] The present invention aims to solve these inconveniences, and the invention described in claim 1 of the present invention is a welding gauge comprising a plate-shaped sliding scale body slidably disposed on a plate-shaped gauge body, length graduations formed on the front and / or back of the gauge body, and reading indicators formed on the front and / or back of the sliding scale body, the sliding scale body being slid relative to the gauge body in accordance with the specifications of various welded portions, and the length graduations and reading indicators being used to measure the dimensions of welded portions before, during and after welding, wherein the surfaces of the gauge body and the sliding scale body are flush with each other, the gauge body and the sliding scale body are slidably disposed by a dovetail structure, a plate spring is interposed in the sliding gap between the gauge body and the sliding scale body, and a finger hook convex body is fixedly disposed on the surface of the sliding scale body. The finger hook projection is formed on the ridge-shaped portion. The welding gauge is characterized by the following:

[0008] The invention of claim 2 is a welding gauge in which a plate-shaped sliding scale is slidably disposed on a plate-shaped gauge body, length scales are formed on the front and / or back of the gauge body, and reading indicators are formed on the front and / or back of the sliding scale, the sliding scale is slid relative to the gauge body in accordance with the specifications of various welded parts, and the length scales and reading indicators are used to measure the dimensions of welded parts before, during, and after welding, and the surfaces of the gauge body and the sliding scale are flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, a plate spring is interposed in the sliding gap between the gauge body and the sliding scale, and a finger hook convex is fixedly disposed on the surface of the sliding scale. The finger hook protrusion is formed on the block-shaped portion. The welding gauge is characterized by the following:

[0009] The invention of claim 3 is a welding gauge in which a plate-shaped sliding scale is slidably disposed on a plate-shaped gauge body, length scales are formed on the front and / or back of the gauge body, and reading indicators are formed on the front and / or back of the sliding scale, the sliding scale is slid relative to the gauge body in accordance with the specifications of various welded parts, and the length scales and reading indicators are used to measure the dimensions of welded parts before, during, and after welding, wherein the surfaces of the gauge body and the sliding scale are flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, a plate spring is interposed in the sliding gap between the gauge body and the sliding scale, and a finger hook convex is fixedly disposed on the surface of the sliding scale. The finger hook protrusion and the sliding scale are fitted together by a fitting insertion protrusion and a fitting insertion hole that can be fitted together. The welding gauge is characterized by the following:

[0010] Also, claims 4 The invention described is characterized in that the length scale is formed as a so-called stepped scale, in which the height dimension of each scale line differs in a stepped manner. [Effects of the Invention]

[0011] As described above, in the invention of claim 1, the present invention is a welding gauge in which a plate-shaped sliding scale is slidably disposed on a plate-shaped gauge body, length graduations are formed on the front and / or back of the gauge body, and reading indicators are formed on the front and / or back of the sliding scale, the sliding scale is slid relative to the gauge body in accordance with the specifications of various welded parts, and the length graduations and reading indicators are used to measure the dimensions of welded parts before, during and after welding, and the surfaces of the gauge body and the sliding scale are made flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, and a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, and the gauge is used, for example, to measure the dimension of the weld bead height at the welded part after butt welding a pair of base metals together, or to measure the weld bead height at the welded part. Furthermore, for example, after fillet welding of a flange material and a web material, the sliding scale can be slid relative to the gauge body to measure the fillet throat thickness of the weld bead using the reading indicator and length scale. During this measurement, the surfaces of the gauge body and the sliding scale are flush with each other, and a finger hook convex is fixedly disposed on the surface of the sliding scale, so that the sliding operation of the sliding scale relative to the gauge body can be easily performed. The gauge body and the sliding scale are disposed slidably by a dovetail structure, and a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, so that the sliding of the gauge body and the sliding scale can be performed smoothly and reliably. This allows dimensional measurements to be performed reliably using the reading indicator and length scale, improving measurement accuracy and increasing measurement workability. Furthermore, since the finger hook protrusion is formed in a ridge-like portion, the finger of the person measuring can easily push and pull the finger hook protrusion, allowing for reliable dimensional measurements using the reading indicator and length scale, improving measurement accuracy and increasing measurement workability.

[0012] In the invention of claim 2, a plate-shaped sliding scale is slidably disposed on a plate-shaped gauge body, length scales are formed on the front and / or back of the gauge body, and reading indicators are formed on the front and / or back of the sliding scale, the sliding scale is slid relative to the gauge body according to the specifications of various welded parts, and a welding gauge is used to measure the dimensions of welded parts before, during and after welding using the length scales and reading indicators, the surfaces of the gauge body and the sliding scale are flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, and a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, and the gauge body can be used to measure the dimensional height of a weld bead at a welded part after butt welding a pair of base metals together, for example, or to measure the height of a weld bead at a welded part. Furthermore, for example, after fillet welding of a flange material and a web material, the sliding scale can be slid relative to the gauge body to measure the fillet throat thickness of the weld bead using the reading indicator and length scale. During this measurement, the surfaces of the gauge body and the sliding scale are flush with each other and a finger hook protrusion is fixedly disposed on the surface of the sliding scale, so that the sliding operation of the sliding scale relative to the gauge body can be easily performed. The gauge body and the sliding scale are disposed slidably by a dovetail structure and a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, so that the sliding of the gauge body and the sliding scale can be performed smoothly and reliably. This allows dimensional measurements to be performed reliably using the reading indicator and length scale, improving measurement accuracy and increasing measurement workability. Furthermore, since the finger hook protrusion is formed on a block-shaped portion, the sliding operation of the sliding scale against the gauge body can be easily performed, and the sliding operation between the gauge body and the sliding scale can be performed smoothly and reliably.This means that dimensional measurements can be performed reliably using the reading indicator and length scale, improving measurement accuracy and increasing measurement workability, and the presence of the block-shaped portion ensures that the sliding operation with the finger can be performed reliably.

[0013] In the invention of claim 3, a plate-shaped sliding scale is slidably disposed on a plate-shaped gauge body, length scales are formed on the front and / or back of the gauge body, and reading indicators are formed on the front and / or back of the sliding scale, the sliding scale is slid relative to the gauge body according to the specifications of various welded parts, and a welding gauge is used to measure the dimensions of welded parts before, during and after welding using the length scales and reading indicators, the surfaces of the gauge body and the sliding scale are flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, and a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, and the gauge body can be used to measure the dimensional height of a weld bead at a welded part after butt welding a pair of base metals together, for example, or to measure the height of a weld bead at a welded part. Furthermore, for example, after fillet welding of a flange material and a web material, the sliding scale can be slid relative to the gauge body to measure the fillet throat thickness of the weld bead using the reading indicator and length scale. During this measurement, the surfaces of the gauge body and the sliding scale are flush with each other and a finger hook protrusion is fixedly disposed on the surface of the sliding scale, so that the sliding operation of the sliding scale relative to the gauge body can be easily performed. The gauge body and the sliding scale are disposed slidably by a dovetail structure and a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, so that the sliding of the gauge body and the sliding scale can be performed smoothly and reliably. This allows dimensional measurements to be performed reliably using the reading indicator and length scale, improving measurement accuracy and increasing measurement workability. Furthermore, since the finger hook protrusion and the sliding scale are fitted together using a fitting insertion protrusion and a fitting insertion hole portion that can be fitted into each other, the strength of the connection between the finger hook protrusion and the sliding scale can be increased and a rotation prevention effect can be obtained.As a result, the measuring person can easily push and pull the finger hook protrusion with their fingers, and dimensional measurements can be reliably made using the reading indicator and length scale, thereby improving measurement accuracy and increasing measurement workability.

[0014] Also, claims 4 In the described invention, the length scale is formed as a so-called stepped scale, in which the height dimension of each scale line differs in a stepped manner, so that the scale lines of the length scale can be easily read, and dimensional measurement can be reliably performed using the reading indicator and the length scale, thereby improving measurement accuracy and increasing measurement workability. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is an overall perspective view of a first embodiment of the present invention; [Figure 2] 1 is an overall exploded perspective view of a first embodiment of the present invention; [Figure 3] 1 is an overall front view of a first embodiment of the present invention; [Figure 4] FIG. 2 is a rear view of the entire first embodiment of the present invention. [Figure 5] 1 is a partial cross-sectional view of a first embodiment of the present invention; [Figure 6] 1 is a partial cross-sectional view of a first embodiment of the present invention; [Figure 7] 1 is a partial cross-sectional view of a first embodiment of the present invention; [Figure 8] 1 is a front view of a first embodiment of the present invention in use; [Figure 9] 1 is a front view of a first embodiment of the present invention in use; [Figure 10] FIG. 2 is a rear view of the first embodiment of the present invention in use. [Figure 11] 1 is a partially enlarged perspective view of a first embodiment of the present invention; [Figure 12] 1 is a partial cross-sectional view of a first embodiment of the present invention; [Figure 13] FIG. 2 is a partially enlarged perspective view of a first embodiment of the present invention. [Figure 14] 1 is an overall front view of a first embodiment of the present invention; [Figure 15] FIG. 10 is a partially enlarged perspective view of a second embodiment of the present invention. [Figure 16] FIG. 10 is a partially enlarged perspective view of a second embodiment of the present invention. [Figure 17] FIG. 10 is an overall front view of a third embodiment of the present invention. [Figure 18] FIG. 10 is a rear view of the entire third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] 1 to 18 show embodiments of the present invention. and reference examples1 to 12 show a first embodiment of the present invention, and FIGS. 13 and 14 show a second embodiment. First reference example ,Figure 15 shows the implementation Second form example ,Figure 16 shows the implementation Second reference example ,Figures 17 and 18 are the implementation Third form example is.

[0017] In the first embodiment shown in Figs. 1 to 12, roughly speaking, as shown in Figs. 1, 2, 3, 5 and 8, a plate-shaped sliding scale 2 is slidably disposed on a plate-shaped gauge body 1, length scales M are formed on the front surface 1a and / or back surface 1b of the gauge body 1, and reading indicators I are formed on the front surface 2a and / or back surface 2c of the sliding scale 2. In this case, length scales M are formed on the front surface 1a and back surface 1b of the gauge body 1, and reading indicators I are formed on the front surface 2a of the sliding scale 2, and the sliding scale 2 is slid relative to the gauge body 1 according to the specifications of various welding portions W. The welding gauge G is used to measure the dimensions of the welded area W before, during and after welding using the length scale M and the reading indicator I, and the surface 1a of the gauge body 1 and the surface 2a of the sliding scale 2 are flush with each other, the gauge body 1 and the sliding scale 2 are arranged to slide freely by a dovetail structure S, a leaf spring storage recess L2 is formed in the sliding gap T between the gauge body 1 and the sliding scale 2, and a leaf spring L is interposed in the leaf spring storage recess L2, and a finger hook protrusion 3 is fixedly arranged on the surface 2a of the sliding scale 2. Although not shown in the figures, various welding gauges G have a structure in which a length scale M is formed on the front surface 1a or back surface 1b of the gauge body 1 and a reading indicator I is formed on the front surface 2a and back surface 2c of the sliding scale 2, or in which a reading indicator I is formed on the front surface 2a or back surface 2c of the sliding scale 2. In other words, there are also structures in which a length scale M is formed on the front surface 1a and / or back surface 1b of the gauge body 1 and a reading indicator I is formed on the front surface 2a and / or back surface 2c of the sliding scale 2, and these various welding gauges G can be applied.

[0018] In this case, as shown in FIGS. 3 and 4, the length scale M is formed as a so-called stepped scale in which the height dimension of each of the scale lines M1··· differs in a stepped manner.

[0019] In this case, as shown in Figs. 2, 5, 6 and 7, the dovetail structure S is constituted by a sliding structure in which a V-shaped dovetail portion S1 formed on the surface 1a of the gauge body 1 and a V-shaped dovetail portion S2 formed on the sliding scale 2 are in a rotation-preventing state, and one end L1 of the leaf spring L is fixed to the gauge body 1 by crimping in the sliding gap T between the gauge body 1 and the sliding scale 2. Furthermore, as shown in Figs. 2, 4 and 7, an insertion hole 1c is formed in the gauge body 1 and an insertion hole 4a is formed in the rotating scale 4, and the gauge body 1 and the rotating scale 2 are in a rotation-preventing state. A sliding ring 1d is interposed between the opposing surfaces of gauge body 1 and rotating ruler 4, and a rotating pin 5 is inserted through insertion hole 1c, insertion hole 4a and sliding ring 1d, and a head 5a is formed on the rotating pin 5. A sliding ring 1d is also interposed between gauge body 1 and rotating ruler 4, and the axial end of the rotating pin 5 is fixed by crimping with a crimping portion 5b. The rotating ruler 4 is rotatably mounted on the back surface 1b of gauge body 1 by the rotating pin 5, and length scale M and the above-mentioned reading indicator I are formed on the surface of the rotating ruler 4, and length scale M and angle scale θ are formed on the back surface 1b of gauge body 1.

[0020] 1, 2, 5, and 6, the finger hook convex body 3 and the sliding scale 2 are fitted together by two insert-fitting convex portions 3a and two insert-fitting holes 2b, which are fittable with each other, and as shown in Fig. 12, a stop hole 3c is formed in the shaft of the insert-fitting convex portion 3a, and the tapered surface on the entrance side of the stop hole 3c is crimped to the inner surface of the insert-fitting hole portion 2b with a crimping portion 3d using a crimping tool not shown, thereby crimping and fixing the insert-fitting convex portions 3a and the insert-fitting hole portion 2b. Also, in this case, as shown in Fig. 11, the finger hook convex body 3 is formed into a ridge-like portion 3b of a substantially triangular prism.

[0021] Since the first embodiment has the above-mentioned configuration, the plate-shaped sliding scale 2 is slidably disposed on the plate-shaped gauge body 1, length scales M are formed on the front surface 1a and the back surface 1b of the gauge body 1, and reading indicators I are formed on the front surface 2a of the sliding scale 2. The sliding scale 2 is slid relative to the gauge body 1 according to the specifications of various welded portions W, and a welding gauge G is used to measure the dimensions of the welded portion W before, during, and after welding using the length scales M and the reading indicators I, and the front surface 1a of the gauge body 1 and the front surface 2a of the sliding scale 2 are flush with each other, the gauge body 1 and the sliding scale 2 are slidably disposed by a dovetail structure S, and a leaf spring L is interposed in the sliding gap T between the gauge body 1 and the sliding scale 2. For example, as shown in FIG. After butt welding with a base material WB, to measure the dimensional measurement of the weld bead height H of the weld bead B at the welded area W, the gauge body 1 of the welding gauge G is placed upright on one of the base materials WB, and the sliding scale 2 is slid relative to the gauge body 1 with the operator's finger until the measurement point P at the bottom end of the sliding scale 2 abuts against the weld bead B at the welded area W, and the weld bead height H of the weld bead B can be measured using the reading indicator I and length scale M. Also, for example, as shown in Figure 9, after fillet welding between a flange material FL and a web material WE, the gauge body 1 of the welding gauge G is placed at an angle of 45°, and the measurement point P at the tip of the sliding scale 2 is abutted against the weld bead B at the welded area W, and the fillet throat thickness N of the weld bead B can be measured using the reading indicator I and length scale M.

[0022] 1, 2, 3, 5 and 8, the surface 1a of the gauge body 1 and the surface 2a of the sliding scale 2 are flush with each other, and the finger hook convex portion 3 is fixedly disposed on the surface 2a of the sliding scale 2, so that the sliding scale 2 can be easily slid relative to the gauge body 1. The gauge body 1 and the sliding scale 2 are disposed slidably by the dovetail structure S, and a leaf spring L is interposed in the sliding gap T between the gauge body 1 and the sliding scale 2, so that the sliding of the gauge body 1 and the sliding scale 2 can be performed smoothly and reliably. This allows dimensional measurements to be performed reliably using the reading indicator I and the length scale M, improving measurement accuracy and increasing measurement workability.

[0023] In this case, as shown in FIGS. 3 and 4, the length scale M is formed as a so-called stepped scale in which the height dimension of each of the scale lines M1·· varies in a stepped manner. Therefore, the scale lines M1·· of the length scale M can be easily read, and dimensional measurement can be reliably performed using the reading index I and the length scale M, thereby improving measurement accuracy and increasing measurement workability.

[0024] 1, 2, 5 and 6, the finger hook convex portion 3 and the sliding scale 2 are fitted together by two interlocking insert convex portions 3a and two interlocking insert holes 2b, which increases the strength of the connection between the finger hook convex portion 3 and the sliding scale 2 and provides a rotation-preventing effect. This allows the measurer's finger to easily push and pull the finger hook convex portion 3, ensuring reliable dimensional measurements using the reading index I and the length scale M, improving measurement accuracy and increasing measurement workability. In this case, as shown in FIG. 11, the finger hook convex portion 3 is formed into a ridge-like portion 3b that is approximately a triangular prism. This allows the measurer's finger to easily push and pull the finger hook convex portion 3, ensuring reliable dimensional measurements using the reading index I and the length scale M, improving measurement accuracy and increasing measurement workability.

[0025] 2, 4, and 7, the rotary scale 4 is rotatably mounted on the back surface 1b of the gauge body 1 by a rotary pin 5, the length scale M and the reading indicator I are formed on the surface of the rotary scale 4, and the length scale M and angle scale θ are formed on the back surface 1b of the gauge body 1. Therefore, as shown in Fig. 10, after fillet welding the flange material FL and the web material WE, the gauge body 1 of the welding gauge G is placed upright on the flange material FL, the rotary scale 4 is rotated by the rotary pin 5, and measurement point P, which is the tip of the rotary scale 4, is brought into contact with the intersection of the weld bead B and the web material WE at the welded portion W, and the leg length F of the fillet of the weld bead B can be measured by the reading indicator I and the length scale M. Furthermore, although not shown, the rotary scale 4 can be rotated by the rotary pin 5 to measure the bevel angle and root length of the groove K by using the reading indicator I and the angle scale θ.

[0026] Figures 13 and 14 First reference example 15 shows another example structure, in which the upper surface of the finger hook projection 3 is formed with a plurality of triangular concave and convex mountain wave-like portions 3e, and Second form example shows another example structure, in which the finger hook projection 3 is formed in a square block-shaped portion 3f, and the embodiment of FIG. Second reference example shows another example structure, in which the upper surface of the finger hook projection 3 is formed with a knurled portion 3g consisting of a plurality of intersecting grooves.

[0027] However, these First reference example , Second form example and Second reference example Even in this case, the same effects as those of the first embodiment can be obtained, and First reference example In this case, the presence of the wavy portion 3e ensures contact with the finger surface. Second form example In this case, the block-shaped portion 3f ensures contact with the finger surface during the pushing and pulling sliding operation. Second reference example In this case, the presence of the knurled portion 3g ensures contact with the finger surface.

[0028] Figures 17 and 18 Third form exampleshows another example structure, in which the length scale M is formed as a so-called normal scale in which the height dimension of each of the scale lines M1·· is the same.

[0029] However, this Third form example Even in this embodiment, the same effects as those of the first embodiment can be obtained, and the length scale M is formed as a so-called normal scale in which the height dimensions of each of the scale lines M1·· are the same, so that the scale lines M1·· of the length scale M can be easily formed.

[0030] Furthermore, although not shown in the figures, the welding gauge G is not limited to the structure of the welding gauge G consisting of the gauge body 1 and the sliding scale 2 shown in the first embodiment example, but can be applied to the sliding scale 2 of various welding gauges G.

[0031] The present invention is not limited to the above-described embodiment, and the structure and shape of the welding gauge G, length scale M, scale lines M1··, reading indicator I, welding area W, dovetail structure S, leaf spring L, gauge body 1, sliding scale 2, insertion hole portions 2b·2b, finger hook convex portion 3, and insertion convex portion 3a·3a can be modified and designed as appropriate.

[0032] As described above, the intended purpose can be fully achieved. [Explanation of symbols]

[0033] G welding gauge M Length scale M1 scale mark I Reading Indicator W Welded part S dovetail structure T sliding gap L leaf spring 1 Gauge body 1a surface 2 Sliding scale 2a surface 2b Insertion hole part 2c Back 3 Finger rest convex body 3a Insertion protrusion 3b Mountain ridge 3e Mountain wavy part 3f Block-shaped part 3g Knurled part

Claims

1. 1. A welding gauge having a plate-shaped sliding scale slidably disposed on a plate-shaped gauge body, length graduations formed on the front and / or back of the gauge body, and reading indicators formed on the front and / or back of the sliding scale, the sliding scale being slid relative to the gauge body in accordance with the specifications of various welded portions, and used to measure the dimensions of welded portions before, during and after welding using the length graduations and reading indicators, wherein the surface of the gauge body and the surface of the sliding scale are flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, and a finger hook convexity is fixedly disposed on the surface of the sliding scale, the finger hook convexity being formed in a ridge-like portion.

2. 1. A welding gauge having a plate-shaped sliding scale slidably disposed on a plate-shaped gauge body, length graduations formed on the front and / or back of the gauge body, and reading indicators formed on the front and / or back of the sliding scale, the sliding scale being slid relative to the gauge body in accordance with the specifications of various welded portions, and used to measure the dimensions of welded portions before, during and after welding using the length graduations and reading indicators, wherein the surface of the gauge body and the surface of the sliding scale are flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, and a finger hook convexity is fixedly disposed on the surface of the sliding scale, the finger hook convexity being formed in a block-shaped portion.

3. 1. A welding gauge having a plate-shaped sliding scale slidably disposed on a plate-shaped gauge body, length graduations formed on the front and / or back of the gauge body, and read-out indicators formed on the front and / or back of the sliding scale, the sliding scale being slid relative to the gauge body in accordance with the specifications of various welded portions, and used to measure the dimensions of welded portions before, during and after welding using the length graduations and read-out indicators, characterized in that the surfaces of the gauge body and the sliding scale are flush with each other, the gauge body and the sliding scale are slidably disposed by a dovetail structure, a leaf spring is interposed in the sliding gap between the gauge body and the sliding scale, and a finger hook protrusion is fixedly disposed on the surface of the sliding scale, and the finger hook protrusion and the sliding scale are fitted together by means of an insert-fit protrusion and an insert-fit hole that can be fitted together.

4. 4. The welding gauge according to claim 1, wherein the length scale is formed as a so-called stepped scale in which the height dimension of each scale line differs in a stepped manner.

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