Pocket size,suitable for various materials,average calculation of 9 readings,limits setting Low-High Ultrasonic Thickness Gauge Features:* Pocket size, easy to operate* Suitable for various materials such as steel,stainless steel, aluminum , glass, polystyrene, polyethylene* Average calculation of max 9 readings* Limits setting Low-High* Standard 5.0MHz transducer included, optional transducers 7 ...