Ultrasonic Thickness gauges are measuring instruments that can be used to determine the thickness or gauge of a material. There are actually several different types of thickness gauges, each that function in a slightly different manner depending on the intended application for the gauge.

A Ultrasonic thickness gauge is an essential quality assurance tool when anodizing, galvanizing and applying zinc coating to metallic surfaces. A thickness gauge also is used to measure body paint thickness and uniformity on pre-owned cars, revealing repainted spots, identifying hidden damages and exposing undisclosed accidents.

A rugged ultrasonic thickness gauge determines sample thickness by measuring the amount of time it takes for sound to traverse from the transducer through the material to the back end of a part and back. The ultrasonic thickness gauge then calculates the data based on the speed of the sound through the tested sample.