Mitutoyo HH-V400 Portable Leeb hardness testerHardness Tester Features: Accuracy: 12 HL (800 HL + 1. 5%) Hardness Display range: Leeb hardness: 1 to 999HL Specimen Thickness: Minimum 25 mm, 3 mm if coupled to a rigid support Specimen Mass: Minimum 5 kg, 2 to 5kg if placed on a rigid support Auto angle compensation Conversion function Rechargeable battery (Ni MH) Sample registration and offset set up: up to 100 inputs