MODEL HR-150A ROCKWELL HARDNESS TESTER Feature & Use Manual testing process, no need for electric controlling Itâs steady and reliable for testing of curved surface Precision conforms to the Standards of GB/T 230.2, ISO 6508-2 and ASTM E18 Itâs suitable to determine the Rockwell hardness of ferrous, non-ferrous metals and non-metal materials. It can be widely applied in the Rockwell hardness testing for heat treatment materials, such as quenching, hardening and tempering, etc. Specifications Measuring range: 20-88HRA, 20-100HRB, 20-70HRC Test force: 588.4, 980.7, 1471N (60, 100, 150kgf) Max. height of test piece: 170mm Depth of throat: 135mm Min. scale value: 0.5HR Dimensions: 466 x 238 x 630mm Weight: approx. 65kg Standard accessories Large flat anvil: 1 pc. Small flat anvil: 1 pc. V-notch anvil: 1 pc. Diamond cone penetrator: 1 pc 1/16â steel ball penetrator: 1 pc. Rockwell standardized block: 5 pcs.