Divinext Portable Digital Ultrasonic Thickness Measurement Gauge Ultrasonic Sound Velocity Measurement Metal Width Measuring Device Sound Velocity Meter UTM-9/GM-100 Ultrasonic Thickness Gauge Metal Steel Testing Meter Transducer Digital Caliper  (1.2-220 mm)

Auto calibration to assure the accuracy. Make a quick adjustment for the sound velocity / thickness, and a quick recall to the stored data Thickness measurement storage, which facilitates the height work or working in wild area. Sound velocity measurement. Large LCD display for easy readout. Low battery indication and auto power off. Specifications: 4 Digit LCD Display Minimum Display Unit: 0.01mm Measuring Range: 1.2 to 225 mm (steel) Accuracy +/- (1%H + 0.1) mm H denotes the measured thickness Sound Velocity range 1000 to 9999 m/s Accuracy: ± (1%H+0.1) mm, H denotes the measured thickness. Working frequency: 5MHz Resolution: 0.1mm Minimum limit for tube measuring (steel): F20 * 3.0mm (steel) Sound velocity Range: 1000~9999m/s Power supply: 3 * 1.5V AAA batteries (included) Item Size: 15x 8x 3cm Product net weight: 210 grams