NASA NTRS · 19690000578
Laser interferometer micrometer system
Abstract
Laser micrometer measures dimensions of precision gyro and gas bearing parts using the principle of measuring light phase changes rather than a direct fringe count. The system uses light beams to eliminate errors due to deformations and surface irregularities, and three interferometers.
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Logue, S. H.. 1969-11-01. Laser interferometer micrometer system. https://ntrs.nasa.gov/citations/19690000578
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