Robust and Portable Design: Constructed from rugged, durable materials, this device is specifically designed for use in various industrial sites and workshop environments. High-Precision Digital Display: This handheld metal hardness tester features a high-brightness display screen that clearly presents digital readings, ensuring accurate hardness measurements even in demanding environments. Automatic Data Lock: Equipped with a built-in intelligent automatic data-locking function, this portable hardness tester supports extensive data storage, group management, and result sharing, helping you organize your test data with high efficiency. Tool-Free Calibration: With this digital hardness tester, you will experience a hassle-free and convenient calibration process; simply press the handle against a standard hardness block to perform a one-touch calibration, completely eliminating the need for tedious disassembly steps. Service: If you have any questions, please feel to contact us and we will respond within 24 hours.