This tester, which won the national quality silver medal prize in 1989, is a practical semiautomatic hardness measuring instrument. This model is suitable for use in factories, scientific research institutes and laboratories of colleges, for determining the Rockwell hardness of ferrous, non-ferrous metals, non-metal materials and their finished parts.


  • A frictionless loading shaft mechanism is adopted in this instrument instead of the conventional type. The application of a preliminary test force is controlled by a magnetic clutch, therefore the accuracy is greatly increased.
  • A series of operations including applying, holding and releasing of total test force is performed automatically, completely eliminating human error.
  • Reading error by operators can be avoided thoroughly as the measured hardness values are digitally displayed.
  • The measured hardness value and data processing result concerned can be recorded automatically by the recorder.


  • 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: 130mm
  • Unit for display: 0.1HR
  • Power supply: 220V AC or 110V AC, 50/60Hz
  • Dimensions: 500 x 250 x 700mm
  • Weight: approx. 75kg

Main accessories

  • Large flat anvil: 1 pc.
  • Small flat anvil: 1 pc.
  • Large V-notch anvil: 1 pc.
  • Diamond cone penetrator: 1 pc.
  • 1/16″ steel ball penetrator: 1 pc.
  • Rockwell standardized block: 5 pcs.
  • Printer: 1 pc.