Landtek - Model TM-8819-T6 -Multi Mode Ultrasonic Thickness Gauge

The digital ultrasonic thickness gauge determines the thickness of a part or structure by accurately measuring the time required for a short ultrasonic pulse generated by a transducer to travel through the thickness of the material, reflect from the back or inside surface, and be returned to the transducer. The measured two-way transit time is divided by two to account for the downand-back travel path, and then multiplied by the velocity of sound in the material.