An automatic interferometer capable to measure the gauge blocks up to 1,000 mm

摘要

An new system for absolute measurement of gauge block length by interferometry is described. The system is based on a Michelson interferometer which can measure the short gauge block and the long gauge block together. 3 frequency stabilized lasers are used as the light source of the interferometer for determining the length of the gauge block by the exact fraction method. The gauge blocks can be automatically measured after initial setting of the gauge blocks.