Ultrasonic thickness gauge 101H,103H Features: According to the principle of ultrasonic pulse reflect, precision measuring all sorts of plank and various processing parts. Widely used in petroleum, chemical, metallurgy, shipbuilding, aviation and navigation, etc. Automatic check zero, correct the system error. Linear automatic compensation, using single-chip microcomputer software correct probe error and with high accuracy. Technical parameter: Measuring scope: 1.2 mm - 220mm (Steel, conventional detector) Or 0.8mm-50mm (Small tube thickness probe) 4 digit LCD display, can backlit work Velocity adjustable scope: 101H: 500-9999m/s, continuous adjustable 103H : 5900m/s, un-adjustable Material thickness can measured velocity. Measurement error: +/- (0.5% H + 0.1) mm Provide coupling instructions, through the observe stable state can know whether coupling normal. Power supply: a no.5 batteries Instructions: when the power supply voltage owe