... equipped with 7 different impact devices, automatic identification the type of impact device, replacement without re-calibration. Support "Forged (Steel ... zinc alloy (brass), copper-tin alloy (bronze), copper, forged steel Hardness standard: HL, HB, HRB, HRC, HRA, HV,HS Display: dot ... matrix LCD Data Storage: Maximum 500 group (the impact of the number of 32 ~ 1)Thermal printer, working quietly, can be ...