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

Stopwatch, Type A-8, Navigation Watch for Parts or Repair 1944 "Jitterbug" PBM-5 MarinerHere 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

Made by Weston

Inside the bowl is the compass card

98 deg C for every 1000 ft increase in altitude

also known as a "target flight indicator"

The Pioneer 1829-2-A Magnetic Compass was used in various US military vehicles and naval craft during WWII

used during WWII

The temp reading is inaccurate

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

Kick start your collection with this lot of 9 US military aircraft instruments from WW2 to Vietnam-era aircraft: Turn & Bank

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

75 inches diameter and ~3 inches deep

and is in its original