UM6700 Ultrasonic Thickness Gauge Tester Meter 1.0-300mm/0.05-11.8in(Steel)⊕IK

(Zinc, quartz glass, polyethylene, PVC, gray cast iron, nodular cast iron and other ultrasonic wave well-conductive materials. Capture the value of the minimum thickness. 4)Sound Velocity Range: (500~9000) m/s.

eBay