Radio Navigation Indicator Anzeigegerat AFN2 Ln 27002 Luftwaffe
This is a WWII-era Radio Navigation Indicator, AFN2, Ln27002, as used in aircraft of the German Luftwaffe such as the infamous Me 262 Schwalbe jet fighter (see illustration showing location of indicator on cockpit panel) and He 162 Volksjäger jet fighter.
According to our friends at DeutscheLuftwaffe and translated by Google:
This device, also known as a "target flight indicator", was part of the direction finding and landing system "PeilG V" and "PeilG 6" as well as the FuG 16 Z / ZY. With the AFN 2, which replaced the larger AFN 1, an instrument target flight to a received station was possible. With these facilities were target flights, aim and a round reception possible. With the AFN 2, an instrument target flight to a received station was possible. The AFN 2 has 2 hands. The deviation from the heading, left or right to the transmitter, is indicated by the pointer pointing vertically downwards. If the plane flies on a direct course, the pointer is exactly vertical, above the luminous point (square). The other, level, pointer indicates the distance of the aircraft from the transmitter (radio beacon). When the transmitter was flying over, the glow lamp (Fl.26682) integrated in the connector (Ln.27003) lit up. When flying over the transmitter, the horizontal pointer is exactly on the middle luminous point, left on the dial.
The indicator would have required the separate lamp module (Fl26682 & 27003, not included), inserted from the rear, to illuminate the center target.
The indicator is in exceptional condition for its age. The pointers move freely. Measures ~ 2.25 inches diameter and 3 inches deep.