An improved SCUBA diving gauge. A pictograph display is provided which has a shape which conveys the type of information being displayed. The pictograph has the shape of a SCUBA tank for a tank pressure display and the shape of a person for a display of nitrogen absorbed. Pressure transducers coupled...http://www.google.de/patents/US4794803?utm_source=gb-gplus-sharePatent US4794803 - Decompression and air consumption computer
