Metrix Plus - 1.5 V Ultrasonic Thickness Gauge has a small ultrasonic transcender that travels through the test piece and reflects the wall's interior surface. Through this method, the test piece is calculated. Ultrasonic Thickness Gauge is used to measure the metal sheet's thickness to improve the areas where there are damages due to corrosion, scratches, and dents. A sound is emitted from the gauge, which travels back to the other side of the metal's sheet to determine the metal sheet's size. It is a handheld device which is light in weight. The device switches off after it has been left without measurements. The 1.5 V Ultrasonic Thickness Gauge also has a low battery indicator. Product Specifications- Brand- Metrix Plus Sound velocity- 500 -900 meters per second Weight-145 grams Model- UTM5 Measuring range- 0.9 - 350 mm Product Dimensions- 145 x 65x 25 mm Power- 1.5 V x 4 battery