Specification:

Measuring range (metric/imperial): 1.5-200 mm,0.06-8 inch
Operating principle: ULTRASONIC
Materials measured: only 11 types of materials, including steel, cast iron, aluminum, red copper, brass, zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron
Lower limit steel pipes: 15x2.0mm, 20x3.0mm determined by the transducer
Calibration block: included
Resolution: 0.1mm
Accuracy: ±(0.5%n+0.1)
Power supply: 4x1.5vaa(UM-3) battery (Not included in the package, you need to get it by yourself)
Battery indicator: low battery indicator
Operating conditions: 0-+45(32-104),≤90%RH
Dimensions: 160x68x32mm
weight: 208g(not including battery)