OPTICAL FLATS AND PARALLELS
Technical features:
utilization: checking flatness, paralellism for the measuring faces of the micrometers;
flatness, paralellism, accuracy: 0.1, 0.2 mm, 0.000004, 0.000008 in;
diameters: 30, 45, 60 mm sau 1.19, 1.8, 2.4 in;
delivery: individually, as set in a carrying case