Turn and Bank Indicator, Type 97, Japanese Army Aircraft US Army Measures ~8 inches square by

Measures ~8 inches square by 4 inches deep (including tallest knob)

It is a large instrument

When the aircraft crossed the Outer and Inner Marker Beacons the pilot also detected their distinctive signals

From the National Museum of American History:

Turn and Bank Indicator, Type 97, Japanese Army Aircraft US Army Measures ~8 inches square byThe WWII era Japanese Type 97 Turn and Bank Indicator was used in several aircraft of the Japanese Army according to the Funatsu Aviation Instruments Museum website, including: Type 97 Fighter Nakajima Ki 27 Nate Type 98 Reconnaissance Seaplane Aichi E11A Laura Types 1, 2, 95, and 99 Trainers Measures ~2. 75 inches diameter and ~5 inches long. It is in reasonable yet experienced condition given its age. The glass and case are intact. The fluid in the