Integrated inside and outside calipers

Abstract

The invention relates to a measuring tool, provides a linear dimension measuring tool, and particularly relates to integrated inside and outside calipers. The integrated inside and outside calipers have a state of inside calipers and a state of outside calipers and comprise a pair of caliper arms which are symmetrically arranged and hinged crosswise through a rotating pin, the portion, at one side of the rotating pin, of each caliper arm serves as a clamping section, and the portion, at the other side of the rotating pin, of each caliper arm serves as a reading section; the end of each clamping section is provided with a clamping head, wherein an included angle formed between the clamping head and the corresponding caliper arm can be adjusted in a plane determined by a pair of the caliper arms; the two clamping heads of which the front ends are sharp heads are symmetrically arranged, and the integrated inside and outside calipers serve as the inside calipers when the clamping heads are inclined inwards and serve as the outside calipers when the clamping heads are inclined outwards; the reading sections are provided with reading devices used for reflecting the length of the inside calipers and the length of the outside calipers; the clamping sections are further provided with locking devices used for locking a pair of the caliper arms at a certain included angle; each reading device comprises a zigzag rule which is provided with a circular-arc-shaped waist-shaped hole and two guiding columns which are movably arranged in the waist-shaped hole, each guiding column is connected with one caliper arm, and the two faces of each zigzag rule are provided with scale lines corresponding to the length of the outside calipers and the length of the inside calipers respectively.

Description

technical field [0001] The technology relates to measuring tools, and provides a linear dimension measuring tool, especially an integrated inner and outer caliper, which can be used as an inner caliper when measuring dimensions such as wall thickness, and can be used as an outer caliper when measuring dimensions such as inner hole diameter. The calipers are used and the measurement data can be read out 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 that the caliper opening does not change, and it is also difficu...

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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