Direction Finding DF Indicator of R.1155 Nav-Com System TBM Avenger so the glass is slightly

so the glass is slightly loose

Measures ~4 inches triangularly by ~2 inches deep

As the air passes the throat

but cosmetically its an exceptional specimen

This is a Japanese Voltmeter

Direction Finding DF Indicator of R.1155 Nav-Com System TBM Avenger so the glass is slightlyHere is a WWII era Direction Finding (DF) Indicator as used in aircraft of the British Royal Air Force, such as bombers Avro Lancaster, Handley Page Halifax, and Vickers Wellington, and patrol bomber Short Sunderland. The DF Indicator received its signal from the R. 1155 receiver in the radio (wireless) comparment. By seeking a signal from a ground transmitter, the indicator displayed the direction of the transmitter in relation to the aircraft by