Portable Handheld Multiple hardness scales supported: HL, HB, HRB, HRC, HRA, HV, and HS, suitable for measuring a wide range of metal materials. High-definition dot-matrix LCD display: Rich and intuitive graphical interface, backlit for easy operation in low-light environments. Automatic impact device recognition: Compatible with seven impact heads, eliminating the need for recalibration, making replacement quick and efficient. Suitable for complex working conditions: Suitable for on-site hardness testing of large workpieces, mounted components, and confined spaces. Data output and printing: Connect to a printer to output official test records for easy quality traceability., Manufacturer: MTHCKXJBSUZ