... Manual Rockwell Hardness Tester HR-150A 1 3.0 Acceptable Automatic C/S Analyzer NQR-4B 1 3.0 Acceptable Electric Arc Furnace ... NDRL-8AI 1 3.0 Acceptable Microcomputer Screen Display ... '', 5/8'', 3/4'', 7/8'', 1'', 1-1/18'', 1-1/4'', 1-1-/2'', 1-3/4'', 2'', 2-1/2'', 3'', M 6, 8, 10, 12 ...