Features 1、A Variety of Values: With high definition bright screen, one key conversion, one measurement can display 7 kinds of hardness values 2、Long Standby Time: This digital hardness tester can stand by for a long time, and can last for about a month when fully charged 3、Large Capacity Storage: This high accuracy hardness tester adopts mass storage and can store 40 sets of experimental data 4、Accurate Measurement: This digital hardness tester can achieve accurate measurement, automatic sleep, automatic shutdown 5、Wide Application: Can be widely used for electric power, petrochemical, machinery manufacturing, metallurgy, vehicle and other industries Specification Item Type: Digital Hardness Tester Display: TFT Color Screen Language: Chinese and English Auto Sleep: 2 Minutes Automatic Shutdown Time: 3 Minutes Storage: 40 Sets of Data Power Supply: 3 AA Batteries (Not Included) Working Temperature: 0-45℃ Measurement Direction: Vertical down, diagonal down, horizontal, diagonal up, vertical up Measuring Materials: Steel and cast steel, alloy tool steel, stainless steel, cast aluminium alloy, copper zinc alloy, copper tin alloy, pure copper. forged steel Hardness Scale: Leeb (HL), Rockwell A (HRA), Rockwell B (HRB), Rockwell C (HRC), Brinell (HB), Vickers (HV), Shore (HSD) Measuring Range: 170HL-960HL Material: ABS Package List 1 x Digital Hardness Tester 1 x Wire 1 x Contact Rod 1 x Cleaning Brush 1 x User Manual