Ministry of Transport officials show off a new design of aircraft altimeter.
Unissued / Unused material -
Ministry of Transport, London.
GV of Ministry officials discussing old and new Altimeters on plaque. CU Pointer of 10,000 ft. on old and new with improved "follow up line". CU New meter showing warning flag becoming visible.
(Orig.Neg.) Old record suggests material dates from around 26/02/1959.