The latest innovation from the pioneers of the digital multiple echo ultrasonic thickness gauges, the Cygnus DIVE Underwater Thickness Gauge is designed for the professional diver and is accurate, reliable and easy to use. Worn on the diver’s forearm, it gives an invaluable free hand while performing thickness surveys. Made from a tough glass-filled resin, the Cygnus DIVE Underwater Thickness Gauge can withstand all the knocks and bumps of the diving environment. A large bright color TFT screen displays the thickness measurements in big numbers that really stand out - choose the display color that suits you.