... the individual readings and mean test results to all common hardness scales (HV, HB, HRC, HRB, HS);9. Easy operation - ... table 1Display 112×64 LCD with backlightDisplay functions DHardness scale,Hardness value,average value, impact direction,Max/Min value,Material, ... rechargeable lithium-batteryOperating temperature-20°C ~ +50°CDimensions158×41×26mmWeight120g Hardness Tester,In Promotion