Feature: 1. Multi Hardness Systems: The tester pen has built in various hardness systems, which are HL, HV, HB, HS, HRA, HRB, HRC, no need to calculate, directly output data. 2. Dual Coil Technology: The tester pen uses a DL type impact device, which is suitable for testing metal hardness in tight spaces such as recesses. With dual coil technology, it is accurate and has excellent repeatability. 3. Direction Sensor: The hardness test pen has a built in direction sensor that can automatically compensate for measurement errors in different impact directions when measuring at any angle, eliminating the need for manual setup and making multi angle measurement easy. 4. USB Interface: The tip of the impact body is made of tungsten carbide, high hardness. Equipped with USB interface, universal type C cable can be connected to the power supply, direct charging power supply for the instrument measurement, convenient and fast. 5. Dynamic Sleep Algorithm: The hardness test pen adopts dynamic sleep algorithm to extend the standby time, equipped with a large capacity lithium battery with a full charge working time of 35 hours, for the measurement work lasting. 6. Applicable Materials: Standard hardness block is optional, the instrument supports user's own calibration, by calibrating the standard hardness block, it can eliminate the error. Suitable for a variety of materials, including steel, alloy tool steel, stainless steel, gray cast iron, etc. Specification: Item Type: Hardness Tester Material: ABS Impact Device: DL type Hardness System: HL, HV, HB, HS, HRA, HRB, HRC Measurement Range: HLDL (170-960), HV (194-976), HB (188-651), HRC (17.6-68.5), HS (29.5-99.5), HRB (91.5-100), HRA (60-85.8) Resolution: 1HL Measurement Accuracy: ±6HL Repeatability: 6HL Display: 128 x 64 dot matrices, Organic Light Emitting Diode Power Supply: 3.7V rechargeable lithium battery x 1, 250mAh (shipping with internal battery), a single full can be continuous measurement more than 5000 times Charging Interface: USB Type C Operating Temperature Range: -10 to 50℃, 0 to 85%RH (no condensation) Storage Temperature Range: -10 to 60℃, 0 to 85%RH (no condensation). Package List: 1 x Pen Type Hardness Tester1 x USB Cable1 x Brush1 x Instruction Note: 1. When measuring, the distance between any two indentations is not less than 3mm(0.1in), and the distance between the center of the indentation and the edge of the object to be measured should be not less than 5mm(0.2in).2. When finished using, the impact body should be released.3. The use of various lubricants in the impact device is strictly prohibited.