... loading systemAutomatic test process, no human operating error Large LCD display of testing process, easy operation Precision conforms to GB/T ... metals and soft bearing alloys, etc.SpecificationsMeasuring range: 8-650HBWTest force: 1838.8, 2415.8, 7355.3, 9807, 29421N (187.5, 250 ... , 3000kgf)Diameter of tungsten carbide ball: 2.5, 5, 10mmDwelling time of test force: 2-99s Max. height of test piece: ...