Ultrasonic thickness gauge, This NDT product consists of supporting wireless report printing and embedded Bluetooth module. It has high precision timing chip that achieve precise thickness measurement.This unit has 0.001mm test result display accuracy with ultra-low power consumption.Technical Parameters 1) This tester consists of 0.75-400mm steel measuring range.2) Setting for alarming and measurement limit for the result beyond the limit are few alarm function available in this unit3) Lithium battery of 3.7V; working voltage.