Portable Leeb Hardness Tester Kit with Test Block,Hardness Testing Equipment,Rockwell Metal Hardness Meter Durometer for Steel,Aluminum Alloy,Copper,7-in-1 HL, HV, HB, HRC, HRB, HRA, HS

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【Calibration】First press the "Enter" key and then press the "On/OFF" key to display the average value and the nomimal (measuring for 5 times). Use the "Up and Down" key to adjust the true value to match the standard of the hardness block value, and then press the "Enter" key to start the hardness measurement. 【Equiped with D sensor】The Leeb Hardness Tester is equiped with D 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. 【Scale】Converts to all common hardness scales(HV ,HB,HRC,HRB,HRA,HS) 【Preset value】Upper and lower limit of hardness can be preset; When the tested value exceeds the limits, alarm will send out automatically to make convenient for the requirements of batch measurements 【Backlight】Back light display has been used to make convenient for the use in poor light 【Data storage】Max 500 groups（impact times:32～1）of data can be stored at internal non volatile data storage