Stopwatch, Type A-8, Navigation Watch for Ground Speed 1942 "Jitterbug" w Box BT-12 The 7-component Flux Gate Compass

The 7-component Flux Gate Compass system was designed to provide accurate navigational guidance using the earth's magnetic forces by minimizing interference from the systems of the aircraft

such as the Short Stirling

This example is new old stock

Given their age

as documented in the F-86F Maintenance Manual dated Sept 1954 (see photo of page from this manual showing the instrument and the AN #)

Stopwatch, Type A-8, Navigation Watch for Ground Speed 1942 "Jitterbug" w Box BT-12 The 7-component Flux Gate CompassHere 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 # AC42 7094, indicating manufacturing year of 1942. 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 seconds and