Recognition Light Control, IFF, WW2 P-47 Thunderbolt Nick Fighter made by Kollsman (part number

made by Kollsman (part number 621KN-04)

The pointer labeled "P" indicates RPMs of the Rotor

Inside each page illustrates 9 black and white slides of each slide show including the accompanying text for each slide

The lever for adjusting rate is accessible without removing the clock movement from its case

Here is an original naval Battenberg Course Indicator Mk III

Recognition Light Control, IFF, WW2 P-47 Thunderbolt Nick Fighter made by Kollsman (part numberThis Recognition Light Control Assembly appeared in nearly all of US Army Air Force aircraft of WWII by the end of the war, including the P 47N Thunderbolt Fighter (see photo of the right side panel of the cockpit indicating the location of the switch box). Used for IFF (Identification, Friend or Foe). The toggles flip perfectly. The keying switch depresses as it should. In very nice condition for its age. Measures ~3 inches by ~3. 5 inches x ~2