Turn and Bank Indicator, (Wendezeiger) Luftwaffe, Fl 22402, Pneumatic Short Sunderland The metal sheath would be

The metal sheath would be screwed on from the outside to secure it in place

it is fair to assume that this would have been installed in either the Douglas A-20 Havoc or A-26 Invader

The post war USN fighter F8F Bearcat used the AN5780-3 as documented in its Erection and Maintenance Manual dated 1948

NOTE:  the second pointer is missing

made by Fenwal for the US Navy's Sub Hunter / Patrol Bomber Lockheed P-3 Orion

Turn and Bank Indicator, (Wendezeiger) Luftwaffe, Fl 22402, Pneumatic Short Sunderland The metal sheath would beThis is an experienced yet fine example of an early WWII era German Wendezeiger (Turn and Bank) Fl 22402, as used in aircraft of the Luftwaffe, such as the Bf 109, Me 110, and Ju 87. This example has the pneumatic connection attached. Made by Askania, it has a manufacturing date of Feb 14, 1935. Measures ~3 inches diameter and 5 inches deep. The case paint shows some corrosion, but the glass and face markings are intact, as is the floating ball within