Direction Finding DF Indicator of R.1155 Nav-Com System C-118 This is an original set

This is an original set of Handbook of Operation and Service Instructions AN 05-15-16 May 1944 and Revisions August 1944 for the Gyro Stabilized Flux Gate Compass System

which used pressure sensors at the engines which electrically transmitted the signal to these electrical indicators

used to measure and indicate to the pilot the altitude over the terrain during flight

This is an authentic reference Sperry Aircraft Gyropilot Model A-3

Direction Finding DF Indicator of R.1155 Nav-Com System C-118 This is an original setHere 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) compartment. By seeking a signal from a ground transmitter, the indicator displayed the direction of the transmitter in relation to the aircraft by