Portable Handheld Multiple hardness scales supported: HL, HB, HRB, HRC, HRA, HV, and HS, easily switchable for a wide range of metal materials. Compatible with seven impact devices: Automatically identifies the type, eliminating the need for calibration, adapting to diverse workpiece testing needs. Suitable for large equipment: Capable of measuring heavy workpieces such as shafts and pressure vessels, as well as pre-assembled components. High-precision portable design: Compact and easy to operate, suitable for rapid on-site hardness testing. Wide range of industry applications: Widely used in petrochemical, aviation, power generation, automotive, and marine industries., Manufacturer: MTHCKXJBSUZ