The HL3 series is a simple Leeb hardness tester. One piece, sturdy and durable, compact and easy to carry. Available in D, DC and DL models. Compliant with ASTM A 956. One-click conversion makes viewing data easier. The parameters can be set with the three button group. Any measurement direction can be automatically recognized. The average value is automatically measured. The hardness values can be converted into HRB, HRC, HV, HB, HS. The upper and lower limits can be set. 1250 sets of data can be stored. Has a USB digital interface. Built-in Bluetooth, you can choose a Bluetooth printer. Built-in lithium battery, can be charged by USB cable, can operate for 16 hours. Equipped with standard Richter test blocks, software and instrument case.