Turn & Bank Indicator, AN5820-1 WWII US Army Air Force Aerial Refueling made by Manning Maxwell &

made by Manning Maxwell & Moore

or whether the gunner is strafing a stationary target

it has a manufacturing date of Feb 14

This is a WWI or Post WWI-vintage aircraft or laboratory tachometer "Victometer" made by the Jos W Jones Co

which is designated by a vertical dash on this one and by a small aircraft silhouette on the I-65)

Turn & Bank Indicator, AN5820-1 WWII US Army Air Force Aerial Refueling made by Manning Maxwell &The pneumatically operated, gyroscopic AN5820 1 Turn & Bank Indicator, Bendix part number 1722 2AD 2AD B2, was used across all aircraft of the US Army Air Force during WWII, such as heavy bombers B 17 and B 24, medium bombers B 25 and B 26, as well as fighters P 38, P 39, P 40, P 47, and P 51, according to the US Army Air Force's Interchangeability Cross Reference Chart dated Feb 1945. In aircraft without a central vacuum filtration system, it would