with simplicity in mind, this tester features a menu-style operation that allows for effortless usability. The OLED display screen ensures clear visibility, making it suitable for use in any environment. With seven interchangeable impact devices, the tester offers versatile measurement capabilities without the need for recalibration. Its extensive data storage capacity allows you to store and retrieve up to 350 sets of measurements, including single measurement values, averages, and additional information such as measurement dates, impact direction, times, material, and hardness scales. The alarm output function allows you to set upper and lower hardness limits, ensuring prompt notifications if measurements fall outside the desired range. Calibration is made easy with the included software calibration feature. The tester is powered by two AA alkaline batteries, providing over 100 hours of continuous operation. Its power-saving functions, such as automatic sleep mode and auto power-off, extend battery life. With a measurement range of HLD (170-960) HLD and a 360° measurement direction, this hardness tester offers accurate and reliable results. The OLED display with a 128×32 graphic dot matrix LCD ensures excellent visibility, even in challenging conditions. Elevate your hardness testing capabilities with the GOYOJO Portable Leeb Hardness Tester. Experience the convenience of menu-style operation, the clarity of the OLED display, and the versatility of its measurement functions. Order your tester today and enjoy accurate and efficient hardness testing for a wide range of applications.