Feature:   1. Display Screen: The digital display can show datas in both Chinese and English. Clear display, Chinese and English dual mode, easy to read and use.     2. Large Storage Capacity: This leeb hardness tester has a large storage capacity of 800 groups data tolerance limit measurements. Not afraid of temporary data loss.     3. Multiple Unit Conversions: Our meter can read HL, HB, HRB, HRC, HRA, HV, HS. Supports multiple hardness unit conversions. Suitable for use under poor working conditions. Test at any angle, even upside down.     4. Built in Battery: With a built in 2000mAh battery, and support DC5V 1A charging, pwns a TYPE C interface. Easy and fast charging, large battery capacity.     5. Application: It can be used for quick inspection of multiple measurement parts in a large range of heavy workpieces or large workpieces. Machine tool guide rails, hardness testing of automobile chassis and so on.             Specification:                       Item Type: Leeb Hardness Tester  Material: ABS  Gross Weight: 527g / 18.59oz  Host Product Size: 14x6.5x3cm / 5.51x2.56x1.18in  Battery (Built in Battery): 2000mAh, 103450PL model, polymer lithium battery, 3.7V  Impact Device: Standard D type  Measuring Range: 170-960HLD  Indication Error: ±6HL at 760HLD, ±10HL at 530HLD  Standard Hardness Block: Optional  Measurement Direction: Support vertical down, diagonal down, horizontal, diagonal up, vertical up  Hardness Measuring Materials: Steel and cast steel, alloy tool steel, stainless steel, gray cast iron, ductile iron, cast aluminum alloy, copper zinc alloy (brass), copper tin alloy (bronze), pure copper, forged steel  Strength Measurement Material: Mild steel, high carbon steel, chrome steel, chrome vanadium steel, chrome nickel steel, chrome molybdenum steel, chrome nickel molybdenum steel, chrome manganese silicon steel, higher strength steel, stainless steel  Hardness Scale: Richter (HL), Brinell (HB), Rockwell B (HRB), Rockwell C (HRC), Rockwell A (HRA), Vickers (H), Shore (HS)  Storage Capacity: 800 groups (impact times 30-1)  Charging Specification: Dc 5V 1A Type C USB interface  Working Environment: No strong vibration, no strong magnetic field, no corrosive medium and serious dust in the surrounding environment  Working Temperature and Humidity: 0& 8451;-40& 8451;, 10%RH-80%RH  Storage Temperature and Humidity: -10& 8451;-+50& 8451;, 10%RH-70%RH    Use:  1. Rapid inspection of multiple measurement locations within a large range of heavy workpieces or large workpieces;  2. Bearings and other parts;  3. Quality control of heat-treated workpieces;  4. Hardness testing of machine tool guide rails and automobile chassis;  5. Installed mechanical or permanently assembled components;  6. Workpieces with very small test space such as mold cavity;  7. Failure analysis of pressure vessels, steam turbine generator sets and their equipment;  8.