Feature:1. Portable Hardness Tester: Quickly and accurately measures the hardness of common metal materials, suitable for laboratory and field use. Offers multiple measurement settings for various needs2. Wide Application: This digital hardness meter is suitable for use in manufacturing, chemistry industry, metalworking, and inspection fields. A practical device for non destructive material hardness testing3. High Visibility LCD Display: This portable hardness tester features high brightness LCD display with backlight function for clear visibility even in sunlight, suitable for various measurement conditions4. Accurate Measurement: High accuracy measurement circuit ensures an error of 6% and a repeatability of 0.8% (HLD=800). Supports multiple hardness scales: HLD, HRC, HRB, HRA, HB1, HB2, HV, HSD5. Multiple Functions: Automatically calculates hardness average. No manual lookup required when testing steel samples with D type impact device. Data saving function for recording and viewing. 10 minute auto shutdown6. Power Supply: Built in 1800mAh rechargeable battery, provides long endurance, making it easy to use the hardness tester anytime and anywhere; Type C charging port, compatible with most digital products such as phonesSpecification:Item Type: Metal Hardness TesterHardness Standard: HL, HB, HRB, HRC, HRA, HV, HSDisplay Error: 6%(HLD=800) Display Repeatability: 0.8%(HLD=800) Display: Industrial Grade 128x64 Graphic Dot Array LCD Power Supply: 1 x 1800mAh Rechargeable Battery (built in) Continuous Working Time: About 20 HoursWorking Temperature: -10-50Storage Temperature: -30-60Relative Humidity: 90%MaterialHardnessImpact DeviceDDLSteel and Cast SteelHRC17.9-68.520.6-68.2HRB59.6-99.637.0-99.9HRA59.1-85.8HB127-65181-646HV83-97680-950HS32.2-99.530.6-96.8Forged SteelHB143-650Alloy Tool SteelHRC20.4-67.1HV80-898Stainless SteelHRB46.5-101.7HB85-655HV85-802Grey Cast IronHRCHB93-334HVNodular Cast IronHRCHB131-387HVCast Aluminum AlloyHB19-164HRB23.8-84.6BrassHB40-173HRB13.5-95.3BronzeHB60-290CopperHB45-315.Package List:1 x Hardness Tester1 x Accessory1 x Test Head1 x Brush1 x User Manual1 x USB Cable1 x Plug