Portable Ultrasonic Thickness Gauge Merk: TIME Model: TT100 Range: 1.2 mm ~ 225.0 mm Resolution: 0.1 mm Accuracy: +/- (1%H+0.1) mm Display: 4 digital LCD SurfaceTemperature: -19°C~ +60°C Power supply: 2 x AA batteries 1.5V Dimentions: 126 x 68 x 23 mm *Integrated steel calibration plate. *Carrying case. *Probe 5MHz *Low battery voltage indicator. *Warranty 12 months