WW2 RAF R1125A receiver. This was part of the beam approach system and was fitted to Lancaster and possibly other aircraft.
WW2 RAF R1155 Radio Receiver Lancaster
WW2 RAF R1155 Radio Receiver Spares Screening Cans Knobs Etc
WW2 RAF R1155 A Radio Receiver Lancaster
WW2 RAF “Pipsqueak” Spitfire Hurricane Fighter Radio Navigation System Clock
WW2 RAF R1155 MILITARY RADIO DF METER VISUAL INDICATOR