... ,HB, HRB, HRC,HRA,HV,HS 3. LCD display Leeb Hardness Gauge 1. Easy one handed operation2. Digital Display3. Compact body ... as well as conventional flat surfaces5. Conversion function for different hardness scales6. Self calibrating7. Supplied with NAMAS certified test piece8. ... abundant and intuitive. 11. Can be pre-set limit, hardness, when beyond the scope it automatic alarm, convenience 12.customers ...