HR45A Rockwell superficial hardness tester Main features : High testing efficiency,with high accuracy hydraulic buffer,durable and reliable loading; Higher ,especially suitable for large workpiece testing; Direct dial readings,with scales of HRA,HRB and HRC(other scale available ); Precision hydraulic buffers, loading smooth and adjustable speed; Precision conforms to GB/T230.1/.2 National Standard,ISO 6508-2,ASTM E18. Application: It's 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 Major load 588.4, 980.7, 1471N (60, 100, 150kgf) Max test height 170mm Depth of throat 135mm Hardness resolution 0.5HR Dimension 466 x 238 x 630mm Approx.weight 65kg Standard accessories: Large flat anvil: 1 pc. Small flat anvil: 1 pc. V-notch anvil: 1 pc. Diamond cone indenter : 1 pc. 1/16" steel ball indenter: 1 pc. Rockwell standardized block: 4 pcs