... 2,Hardness formats: HL,HB, HRB, HRC,HRA,HV,HS; 3, Direct Thermal Hardness tester LK110AFeatures: Based on HL hardness measuring principle ... , it can read directly HB value, needn’t manual look-up table. Can English display, menu-style operation ... statistical analysis, measuring printing the report, set the instrument parameters in bulk etc. Rich functions, and meet ... within a wide range of rapid testing