Ultrasonic thickness gauge is an intelligent handheld thickness measuring instrument that utilizes the principle of ultrasonic measurement. This product is controlled by a microprocessor and measures thickness based on the principle of ultrasonic pulse reflection. When the ultrasonic pulse emitted by the probe reaches the material interface through the measured object, the pulse is reflected back to the probe and the thickness of the measured material is determined by accurately measuring the time of ultrasonic propagation in the material. Can quickly and non-destructive measure the thickness of various materials. This product is suitable for a wide range of industrial fields, and can measure the thickness of high-density materials of different materials. It can also monitor the thinning degree of pipelines and pressure vessels after in use. It is a commonly used thickness measuring instrument in non-destructive measurement industries such as manufacturing, metal processing, and commodity inspection. High Frequency:Features a 5MHz working frequency for precise car paint thickness gauge readings. Multi-Material Compatibility:Evaluates various materials with a 105 vapor resistance, ideal for car body paint thickness tester. Advanced Ultrasonic Technology:Fully intelligent high-tech Ultrasonic Thickness Gauge with digital LCD display and backlight. Measuring Range:Measures 1-350mm thickness, suitable for diverse car body paint thickness testing. Color: As Shown Material: plastic The product does not come with a battery and requires 1x 9V battery Package Contents: 1 x thickness gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.