GB/T 36175-2018

This standard specifies the metrological and technical requirements for electronic digital display micrometers with specialized measuring anvils or frames, such as those used for measuring thread pitch diameters, gear teeth, or pipe wall thicknesses. It is applied in precision manufacturing and quality control environments where standard micrometers cannot access or properly measure non-flat or recessed workpiece features. The standard ensures accuracy, repeatability, and interchangeability of these specialized micrometers across industrial sectors like automotive, aerospace, and mechanical engineering.