High-definition TFT color display: Equipped with a TFT color display, it provides clear and easy-to-read hardness test results and improves user experience Intelligent power saving function: Built-in automatic sleep function (2 minutes) and automatic shutdown function (3 minutes), effectively extending battery life, energy saving and environmental protection Large-capacity data storage: Supports storage of up to 40 sets of test data, which is convenient for subsequent viewing, analysis and comparison, and improves work efficiency Diverse measurement directions: Supports multiple measurement directions, including vertical downward, oblique downward, horizontal, oblique upward, and vertical upward, to meet the needs of different materials and scenarios Widely applicable materials: Suitable for hardness measurement of various metal materials, such as steel, alloy tool steel, stainless steel, gray cast iron, ductile iron, cast aluminum alloy, copper-zinc alloy, copper-tin alloy, pure copper and forged steel, etc