Quote: (Originally Posted by
Numpty diver)

The royal navy ships divers also used the avon full face mask on the aquarius twin set .
two types of nose clips .. one black (magnetic) the other yellow non magnetic.. The black one softer and kinder to ya hooter !! but no good for working on loud noise things

Oh yes not that, The Aquarius set I remember that too, You cant forget the small inverted twin set, took over from the intigrated SABA swimmers air breathing apperatus. It had a nasty small blue plastic cylinder butterfly knob on the top of the piller valves covered with two almighty rubber handwheels, When you needed to equalize you could hear the crunching sound as the knod from the full cylinder disintigrated in your hand, used up to 50msw.
It was made by Submarine Products in Hexham Northumberland, they also made a nice simple closed/semi closed rebreather the Oxymix or Oxymax? I worked with Ian Mayo its designer, training the Thai Navy the difference between magnetic and non magnetic. I remember the back of the class would be asleep for most of my lectures, one diver was killed when he mixed up the difference, understand he used a JW auto mine lifting bag and forgot about the delayed timer. When Submarine Products went into recievership and closed as a company the designs were bought by Divex and later became the "Shadow"