Around 1930, Inhabad produced a water diving apparatus called the Inhabad O2-350 system. This system made use of oxygen candles that generated 2.5 litres of oxygen per minute. The unit was used to dive to depths of 15 metres (!) on pure oxygen. The unit is supplied with ear muffs, sandals and weights. The application is to carry out underwater work and search for drowned persons. Inhabad describes the device as 30 x 26 x 9 cm in size, weighing only 4.8 kg. There is no high pressure cylinder in the system. The device is suitable for 30 minutes under water. The device is coded N.W.T.G. N= Naszogen the name of the oxygen system.
