Chambers
This apparatus, offered in four distinct versions, is the current industry standard for testing the water-tight integrity, accuracy, and overall function of depth gauges, watches, dive computers, and certain underwater photographic gear. It's also useful for classroom demonstrations related to diving physics and physiology. Each unit is fitted with an internal plastic bucket so that equipment is actually tested underwater. In fact, many modern instruments may be harmed if tested dry because pressurized air can be forced behind seals and diaphragms! As modern TEK diving becomes widespread, it's essential that related life-support instrumentation be tested on a regular basis.