Compass, Type 98 Otu, Japanese Army Aircraft Vietnam War shows a (+) positive reading

shows a (+) positive reading indicating the current is flowing to the battery (charge)

The rotating horizon requires the right electrical input to turn

perhaps the serial number of the aircraft from which is was removed (

with a maximum airspeed of ~900 km/h

with the civilian version used in the Britannia and Comet airliners

Compass, Type 98 Otu, Japanese Army Aircraft Vietnam War shows a (+) positive readingThis authentic WWII era direct reading magnetic compass, Type 98 Otu, made by Tokyo Aero Indicator Co. was primarily used in aircraft of the Japanese Army such as the Type 4 Mitsubishi Ki 67 Peggy Bomber, Type 99 Kawanishi Ki 48 Lily Light Bomber, and Type 100 Mitsubishi Ki 46 Dinah Reconnaissance aircraft. It is in very good condition given its age. The fluid is no longer present, but the markings on the compass card are clear and precise. The