... Based on the principle of Leeb hardness testing theory. It can measure the Leeb hardness of all metallic materials.l ... at any angle, even upside down.l Direct display of hardness scales HRB, HRC, HV, HB, HS, HL ... , testing date, impact direction, impact times, material and hardness scale etc.l Upper and lower limit can be ... 1)l Printing paper: width is(57.5±0.5)mm, diameter is 30mml Battery pack: 6V NI ...