Features: The Webster Hardness Tester offers precise measurement and portable, making it a essential tool for various material hardness testing needs. Featuring high precisions sensors and rapid readout capabilities, this hardness tester operates on battery power, ideal for both field and laboratory use. For materials engineers, quality inspectors, manufacturing technicians, and researcher, meets diverse professional requirements. Widely applicable in metalworking, automotive manufacturing, and materials research, this tester ensures reliable performances across industry. Constructed from hard alloy, the Webster Hardness Tester is a instrument that delivers consistent result, enhancing efficiency and accuracy in your projects. Specifications: Material: Alloy Resolution: 0.1HWA Accuracy: ±0.5HWA Battery: 3.7V 400mAh(Include) Working Environment: -10 to 50℃, 0-85% Power Voltages: DC5V Working Current: 10mA Size: About. 203x97x30mm/7.99x3.82x1.18in Package Includes: 1 Set Digital Webster Hardness Tester note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.