Feature: 1. Smart Testing: Support easy switching among HL, HV, HB, HS and HRC, the hardness tester with built direction sensor on the probe enables free measurement. 2. High Accuracy: Simple calibration will largely reduce the error, while the dual coil and timing chip will increase the accuracy up to ±6HL, very reliable. 3. Practical Use: Suits for testing small or thin metal parts and surface hardened layers, also ideal for many materials such as steel, stainless steel, etc. 4. Impact Device: Using C type impact device with small impact force, the impactor made from tungsten carbide has high hardness, making the operation easier. 5. Reliable Work: Dynamic sleep algorithm will prolong the standby time, and the large capacity lithium battery can work continuously for 35 hours when fully charged. Specification: Item Type: Hardness Tester Impact Device: C Type Hardness: HL, HV, HB, HS, HRC Measuring Range: 170-960 in HLC, 80-996 in HV, 80-683 in HB, 20-69.5 in HRC, 31.9-102.3 in HS. Resolution: 1HL Measurement Accuracy: ±6 HL Repeatability: 6HL Display: 128 x 64, Organic Light Emitting Diode Power Supply Mode: 1 x 3.7V rechargeable lithium battery with 250mAh capacity, delivery with built in battery. Supports up to 5,000 times continuous measurements with one single full charge. Charging Interface: USB Type C. Operating Temperature Range: -10~50℃, 0~85%RH, non condensing. Storage Temperature Range: -10~60℃, 0~85%RH, non condensing. . Package List: 1 x Hardness Tester1 x USB Cable1 x Brush1 x Accessory1 x User Manual Note: 1. During measurement, the distance between any two indentations should not be less than 3mm, and the distance between the centre 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 various lubricants in the impact device.