I don’t like the idea of getting water into the capsule, or diaphragm or whatever! How would you get it out? A gentle application of the appropriate air pressure seems a preferable idea. Google should have a suitable mmH20 conversion table/factor.
Control Unit for the True Airspeed Unit, as fitted to Victor 2, Vulcan 2, and VC10. The “T.A.M.I.” switch controlled the operation of the Air Mileage Indicator that ticked over the (air) miles flown.
I don’t have the (unlikely) section 10B either. Its not 5L/55 or 5L/56 but is possibly 5L/9959801 ie stock number 6240-99-995-9801 – just a suggestion.
There is a map which shows around 5,000 known UXB’s in the London area alone – and that is just the ones they know about. There must be at least as many again.
And that only covers 8 months, albeit probably the worst 8 months!