Gauging Quality Ep. 1: Surface Plates

Craig Howell and Dirk Dusharme show how a surface plate is calibrated: leveling, cleaning, setting up for calibration, flatness and repeatability measurements.

Calibration is done using a Mahr Federal Differential Leveling System and a Rahn Repeat-O-Meter. Also discussed is the theory behind how the differential leveling systems works, various grades of plates, live questions from viewing audience.

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