Stopwatch, Type A-8, Navigation Watch for Ground Speed 1941 "Jitterbug" w Box B-50 Cabin Altitude Selector

Cabin Altitude Selector

made by Aerosonic part number RC60V10 for Cessna

The 144-page

This is an original 1960's-era Instrument Flight Manual for the Naval Air Training and Operating Procedures Standardization Program (aka NATOPS

The wooden case measures ~ 4 inches tall

Stopwatch, Type A-8, Navigation Watch for Ground Speed 1941 "Jitterbug" w Box B-50 Cabin Altitude SelectorHere is an authentic WWII era aircraft navigator's Watch, Navigation (Ground Speed) Stopwatch, Type A 8, made by Elgin to Air Corps US Army spec #94 27749. With a serial # AC41 5547, indicating a manufacturing order year of 1941. 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). The outer ring of the dial counts up to 10