Mini design: Palm-sized, suitable for cavities, confined spaces, and on-site testing. Multi-angle testing support: Capable of measuring at any angle, including inverted operation, to accommodate complex working conditions. Multiple hardness scales: Supports HL, HRB, HRC, HV, HB, and HS, meeting the testing needs of various metal materials. Smart storage and calibration: Capable of storing multiple data sets and supporting user calibration for easy batch recording and management. Low battery reminder and automatic power-off: Features a battery level indicator and automatic/manual power-off for energy efficiency and efficiency., Manufacturer: CFWWSAQ