Pitch vernier caliper

Abstract

The invention discloses a pitch vernier caliper. The pitch vernier caliper comprises a caliper body (1) and a vernier (2), wherein the vernier (2) is mounted on the caliper body (1) and can slide along the caliper body (1); scales are formed on the caliper body (1); a fastening screw (3) is mounted at the upper part of the vernier (2); the lower part of the vernier (2) is fixedly connected with a measuring jaw A (4); scales corresponding to the scales on the caliper body (1) are formed on the vernier (2). The pitch vernier caliper is characterized in that the lower left side of the caliper body (1) is fixedly connected with a measuring jaw B (8); a blind hole (9) is formed in the lower part of the measuring jaw B (8); a threaded hole (7) is formed in the left side of the measuring jaw B (8); the blind hole (9) is communicated with the threaded hole (7); a measuring needle (5) is mounted in the blind hole (9) in a matched manner; a screw (6) is mounted in the threaded hole (7). The pitch vernier caliper is simple in structure, convenient, feasible, and accurate in measurement.

Description

technical field [0001] The invention belongs to the technical field of hole distance measuring tools, and in particular relates to a hole distance vernier caliper. Background technique [0002] During the processing of fasteners, many linear dimensions are measured with general-purpose measuring tools, usually with ordinary vernier calipers, micrometers, and dial indicators. However, in actual production, some dimensions of some products cannot be measured with general-purpose measuring tools, and special measuring tools need to be designed. [0003] In the prior art, for hexagonal head bolts (nails) or hexagonal nuts with safety holes, the following two dimensions cannot be measured with a universal vernier caliper: (1) The size from the center of the safety hole to the hexagonal prism of the bolt (nail) or nut; (2) The size from the center of the safety hole to the end face of the bolt (nail) head or to the end face of the hex nut. If you want to obtain this type of siz...

AI Technical Summary

Problems solved by technology

However, in actual production, some dimensions of some products cannot be measured with general-purpose measuring tools, and special measuring tools need to be designed

[0003] In the prior art, for hexagon head bolts (nails) or hexagon nuts with insurance holes, the following two dimensions cannot be measured with a universal vernier caliper: (1) Dimensions from the center of the insurance hole to the hexagonal prism of the bolt (nail) or nut; (2) The dimension from the center of the safety hole to the end face of the head of the bolt (nail) or to the end face of the hexagonal nut

If you want to obtain this type of size, you need to perform multiple addition and subtraction calculations, which not only affects the measurement accuracy, but also complicated operations

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