Tip:1. This Leeb hardness tester does not contain calibration blocks, you need to purchase calibration blocks locally. Thank you for your patronage!2.This instrument is equipped with D-type sensor, which needs to measure the hardness of metal more than 5mm. D-type probe is a conventional probe, which is suitable for measuring most workpieces. Workpieces of special materials need to be equipped with other types of probes.3.The three needle thread of the sensor has two colors of yellow and gray. Two colors of the line with random sensors, random delivery. Thank you for your support!Product Features:*Compact plastic case,suitable for use under poor working conditions. Test at any angle, even upside down.*Wide measuring range. It can measure the hardness of all metallic materials. Direct display of hardness scales HRB, HRC, HV, HB, HS, HL*Large screen (segment LCD), showing all functions and parameters. With EL background light.*Large capacity memory could store 100 groups information.*Datapro Software to connect with PC via USB port.*Software calibration function.Main Application:Die cavity of moldsBearings and other partsFailure analysis of pressure vessel, steam generator and other equipmentHeavy work pieceThe installed machinery and permanently assembled parts.Testing surface of a small hollow spaceMaterial identification in the warehouse of metallic materialsRapid testing in large range and multi-measuring areas for large-scale work pieceTechnical Specifications:Measuring range:(170-960)HLD,(17-68.5)HRC,(19-651)HB,(80-976)HV,(30-100)HS,(59-85)HRA,(13-100)HRBMeasuring direction:360Hardness Scale:HL,HB,HRB,HRC,HRA,HV,HSDisplay: segment LCDData memory: max. 100 groups(relative to impact times 321)Working voltage:2AA battery (not included)Continuous working period:about 100 hours(With backlight off)Communication interface:USBStandard Configuration :1.Main unit----1,2.D type impact device---1 With cable,3.Cleaning brush (I)---1,4.Small support ring---1,5.Manual---1