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Hi!

A question from a non diver, how do you measure how much gas there is in a
bottle? This question is because most of the divecomputers I have seen
connects to the bottle with a highpressure hose so I assume that they measure
the gaspressure in the bottle. As an engineer I find this strange because
this adds parts that can have critical failures. A much better way are to 
measure the strain on the bottle and use this to calculate the pressure in
the bottle. This will not add critical components.

If there are sufficient interest I can come up with a solution.

John Erling Blad

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