Standalone micrometer, electronic profile acquisition micrometer system and method of determining the diameter of a cylindrical body

摘要

Suitable methods and equipment for measuring the dimensions of a cylindrical body include a system having a housing and a means for supporting the housing against an arcuate surface of the cylindrical body. The support means comprises at least two wheels having a rotation axis, the rotation axis engaging the two wheels with the arcuate surface of the body so that the edges of the two wheels are spaced apart by a length of a cord located in the cross section of the cylindrical body. Oriented to contact the arcuate surface at both terminals. The measuring means is mounted on the housing for contact with a surface point of the cylindrical body located within the length of the cord of the cylindrical body, based on the length of the cord determined by the two wheels and the height of the cord as determined by the output of the measuring means. Means are provided for determining the diameter of the cylindrical body.