HackerTube / Video
Surface Plate Calibration and Conditioning
oxtoolco
A look at how granite surface plates are inspected, calibrated and reconditioned using an autocollimator, a repeat meter and diamond-charged cast iron laps. Measurements are at the level of millionths of an inch.
Cited in threads on flatness and precision as a glimpse into a niche metrology profession.
3 Hacker News mentions · 2017–2020