Development of a calibration device for simple measuring instruments

摘要

A transportable device for the traceable calibration of most existing industrial simple measuring instrument (SMI) types with internal and external dimensions is developed and tested under laboratory as well as under workshop and production conditions. The calibration device consists of a linear guidance way with 300 mm travel range, accessories for the calibration of numerous types of SMI and a diode laser interferometer. For inherent compensation of changes of the refractive index of air and the temperature of the object to be tested the diode laser is stabilised to a resonance of an air filled optical resonator with a spacer made of steel.