Hardness tester LK110A 1,Measuring scope:(170-960) ... HRC,HRA,HV,HS; 3, Direct Thermal Hardness tester LK110AFeatures: Based on HL hardness measuring principle, can ... can be equipped with 7 different impact devices, automatic identification the type of impact device, replacement without ... than 150 hours of continuous work; with automatic sleep, automatic shutdown features USB interface, you can quickly ...