Picked this up yesterday, not seen one before,
"RAF Dinghy Testing Manometer Ref 27/1926"
dated 1941, covers C, D, J, H, M, L, & K Dinghies, checks for pressure drop over a period of an hour.
Hope it's of interest.
Regards
Gary
"RAF Dinghy Testing Manometer Ref 27/1926"
dated 1941, covers C, D, J, H, M, L, & K Dinghies, checks for pressure drop over a period of an hour.
Hope it's of interest.
Regards
Gary
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