... HRC,HRA,HV,HS; 3, Direct Thermal Hardness tester LK110AFeatures: Based on HL hardness measuring principle, can detect various metal materials. ... , average value, measurement date, impact direction, materials, hardness and other information systems. Thermal printer integrated with the ... upward Measurement of Material: steel and cast steel, alloy tool steel, stainless steel, gray iron, ductile iron, cast ...