Feature: 1. Multi Purpose: One piece body design, compact in size, can flexibly adapt to various occasion, built in 10 kinds of metal materials, has a wide range of applications, can meet your daily work needs. 2. High Precise: The impact body is made of tungsten carbide, has super high hardness, adopt advanced double coil technology, has good repeatability and high measurement accuracy, allowing users to calibrate by themselves and eliminate measurement errors. 3. Multi Angle Measurement: Could measure at 360 degree, the probe has built in direction sensor, which will automatically compensate for measurement errors in different impact directions. 4. Multi Hardness Scale: The instrument has built in various hardness scales, which are HL, HV, HB, HS, HRA, HRB, HRC, no need to calculate, directly output data. 5. Long Battery Life: Using dynamic sleep algorithm, equipped with large capacity lithium battery, the working time is up to 5000 hours when fully charged, can be easily charged by universal type C interface. 6. Curved Surface Measurement: Equipped with small sized support ring, which will stable the workpiece when the measured surface curvature radius R is less than 30mm, making them fully contact, ensuring accuracy. Specification: Item Type: Digital Hardness Tester Material: ABS Impact Device: DC type Hardness Scale: HL, HV, HB, HS, HRA, HRB, HRC Measuring Range: HLD(170-960), HV(83-976), HB(30-651), HRC(17.6-68.5), HS(26.4-99.5), HRB(13.5-100), HRA(60-85.8) Resolution: 1HL Measurement Accuracy: ±6HL Repeatability: 6HL Display Screen: 128x64 dot matrix organic light emitting diode Power Supply Mode: 1 x 3.7V rechargeable lithium battery 250mAh (built in), over 5000 times continuous measurements with a single full charge Charging Interface: USB (Type C) Operating Temperature Range: -10℃ to 50℃, 0-85%RH (non condensing) Storage Temperature Range: -10℃ to 60℃, 0-85%RH (non condensing). Package List: 1 x Digital Hardness Tester1 x Brush1 x Accessory1 x USB Cable1 x Manual Note: 1. During measurement, the distance between any two indentations should not be less than 3mm, and the distance between the center of the indentation and the edge of the object to be measured should not be less than 5mm.2. After use, the impact body should be released.3. It is strictly forbidden to use lubricants in the impact device.