WT100A Digital Ultrasonic Thickness Gauge Meter Tester USB Charging Digital Thickness Metal Tester High Precision 1. It transmits at a constant speed and distinguishes the waves reflected from the back of the instrument. 2. It can also be widely used in manufacturing, metal processing, commodity inspection and other materials that allow ultrasonic waves. 3. Ultrasonic thickness gauge is suitable for materials that conduct and reflect constant sound waves, such as metal, plastic, ceramic, glass, etc. 4. The intelligent hand-held ultrasonic thickness gauge is controlled by microprocessor, which can measure the thickness quickly and accurately, and has the sound of various materials, without the need of ultrasonic measurement damage. 5. The tool is capable of accurately measuring parts in different materials or industrial production, as well as monitoring pressure vessels in pipes and production equipment, and the degree of corrosion of various parts. 6. Measuring range: 1.00-300.0mm (steel) 7. Data Storage: 500 8. 8.3 1.2V nickel-metal hydride rechargeable battery but not equipped