SV-MH310 Portable Hardness Tester Battery information showing the rest capacity of the battery and the charge status Portable Hardness Tester; hardness tester Wide measuring range. It can measure the hardness of all metallic materials. Direct display of hardness scales HRB, HRC, HV, HB, HS, HL and three types of strength values immediately. Large screen LCD, showing all functions and parameters. ...