... supply the HR-150A hardness testing machine hardness resolution:0.5HR indication of hardness value: Dial HR-150A Hardness Testing MachineOur ... non-metal materials. It can be widely applied in the Rockwell hardness testing for heat treatment materials, such as quenching, hardening ... HRC, HRD, HRE, HRF,HRG,HRH,HRKInitial Testing Force: 10Kg(98.07N)All Testing Force: 60Kg (588N), 100Kg (980N), 150Kg ( ...