Direct reading multi-functional caliper

Abstract

The technology relates to a measuring tool, provides a linear dimension measuring tool, and especially a direct reading multi-functional caliper having two states of an internal caliper and an external caliper. The direct reading multi-functional caliper includes a pair of caliper arms which are arranged symmetrically and are crosswise articulated through a rotational pin. One side of each caliper arm is a clamping segment and the other side is a reading segment, and the clamping segment and the reading segment are partitioned by the rotational pin. Caliper heads having adjustable included angles with the caliper arms in a plane defined by the pair of caliper arms are arranged at ends of the clamping segments. The two caliper heads with two tips are arranged symmetrically. When the caliper heads incline inwardly, the caliper is the internal caliper. When the caliper heads incline outwardly, the caliper is the external caliper. A reading device used for reflecting the internal caliper length and the external caliper length is also arranged at the reading segments. A locking device used for locking the pair of caliper arms at a certain angle is arranged at the clamping segments. The caliper heads can be rotationally arranged at the ends of the clamping segments through control screws. Limiting convex plates used for limiting the caliper heads to incline inwardly to a limit position or incline outwardly to a limitation position are arranged at two sides of rear ends of the caliper heads.

Description

technical field [0001] This technology relates to measuring tools, and provides a linear dimension measuring tool, especially a multifunctional caliper that can be directly read. The multifunctional caliper that can be directly read can be used as an inner caliper when measuring wall thickness and other dimensions, and can be used for measuring inner hole diameters. When the size is equal, it can be used as an external caliper, 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...

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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