Rockwell Hardness Tester Model 150R For testing the hardness of hard alloys, quenched and unquenched steels, using steel ball or diamond penetrators to measure Rockwell A, B & C units of measurement. Supplied with test block, flat large, small and V notch anvils, steel ball bearing indentor and diamond Indentor. Manufactured in accordance with ISO 6508-2:1999 & ASTME18. Measuring ranges: 20-88HRA (Test force: 588.4N/60kgf), 20-100HRB (Test force: 980.7N/100kgf), 20-70HRC (Test force: 1471N/150kgf). Max height of test piece: 80mm with screw protective jacket, 170mm without. Depth of throat: 135mm. Dimensions: 466 x 238 x 630mm.