USSR Optical Flat Parallel Bottom 120mm Flatness 0,00012
USSR Optical Flat Parallel Bottom 120mm Flatness 0.00012. Metrology & Measurement standard designed to inspect parallelism and flatness of slip gage blocks, measuring tools & other gauges by interference method. Comes with calibration certificate & manual (in Russian) in original fitted plastic case. Flatness of working surface 0.00012 mm. Local deviations from flatness of the […]