Stopwatch, Type A-8, Navigation Watch for Parts or Repair 1944 "Jitterbug" PBM-5 Mariner Made by Weston

Made by Weston

It is number eight in the Fixed Gunnery and Combat Tactics series

75 inches diameter and ~3 inches deep

98 deg C for every 1000 ft increase in altitude

according to their WWII-era flight manuals (see images of relevant pages from these manuals in photo gallery)

Stopwatch, Type A-8, Navigation Watch for Parts or Repair 1944 "Jitterbug" PBM-5 Mariner Made by WestonHere is an authentic WWII era aircraft navigator's Watch, Navigation (Ground Speed) Stopwatch, Type A 8, made by Waltham. With a serial # prefix AC44, indicating manufacturing year of 1944. Type A 8 stopwatches were used in any WWII aircraft with a navigator, such as heavy (B 17, B 24, B 29) and medium bombers (B 25, B 26) and large transports (C 46, C 47, C 54). This is offered for parts or repair as the crown and winding stem are missing. The outer