Integrated caliper capable of realizing direct reading

Abstract

The invention relates to a measuring tool, provides a linear dimension measuring tool and especially relates to an integrated inner and outer caliper capable of realizing direct reading. The integrated caliper has inner caliper and outer caliper two states, and comprises a pair of caliper arms, which are symmetrically arranged and are in cross hinge through a rotation pin, wherein one section, at one side of the rotation pin, of each caliper arm is a clamping section, and the other section is a reading section. The end portion of each clamping section is provided with a caliper head, the included angle between which and the caliper arm is adjustable in the plane defined by the pair of caliper arms; the two caliper heads, the front ends of which are sharp ends, are symmetrically arranged; when the caliper heads tilt inwardly, the caliper is an inner caliper, and when the caliper heads tilt outwardly, the caliper is an outer caliper; the reading section is provided with a reading device for reflecting the length of the inner caliper and the length of the outer caliper; the clamping section is provided with a locking device for locking the pair of caliper arms within a certain included angle; and the locking device comprises a locking piece provided with a kidney-shaped hole and two locking screws movably arranged in the kidney-shaped hole, wherein one locking screw is connected with one caliper arm through a thread pair.

Description

technical field [0001] This technology relates to measuring tools, and provides a linear dimension measurement tool, especially an integrated internal and external caliper that can be directly read. The integrated internal and external caliper that can be directly read can be used as an internal caliper when measuring dimensions such as wall thickness. It can be used as an external caliper when the inner hole diameter is equal, and the measurement data can be read directly. Background technique [0002] In the prior art, when measuring linear dimensions such as wall thickness, inner hole diameter, and groove width of parts, inner calipers and outer calipers are often used for auxiliary measurement. After the opening of the calipers corresponds to the size to be measured, the calipers need to be removed. Using other measuring tools to measure the linear dimension of the caliper opening, the test results are affected by the skills of the inspectors, it is difficult to ensure t...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when measuring linear dimensions such as wall thickness, inner hole diameter, and groove width of parts, inner calipers and outer calipers are often used for auxiliary measurement. After the opening of the calipers corresponds to the size to be measured, the calipers need to be removed. Use other measuring tools to measure the linear dimension of the caliper opening. The test results are affected by the skills of the inspectors. It is difficult to ensure that the caliper opening does not change, and it is difficult to ensure the accuracy of the measurement.

In addition, the common caliper in the prior art is a single inner caliper and outer caliper, which has a single function, cannot directly read the measurement results, and cannot meet the requirements of direct and effective measurement.

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