C-1 Autopilot Technical Manual AN 11-60AA-1 C-47 since the needle returns to

since the needle returns to rest quickly and without appreciable overswing when deflected from its position

made by Simmonds Aerospace under the Pacitor brand name

when combined with the APA-44 computer

See photo showing the yellow USN anchor symbol stamped on its back case

C-1 Autopilot Technical Manual AN 11-60AA-1 C-47 since the needle returns toThis is an original (not reprint or CD) Handbook of Operation and Service Instructions for the Automatic Pilot Type C 1 System, dated October 1943. The C 1 system was introduced during WWII and used across many bombers of the US Army Air Force and US Navy, including heavy bombers B 17, B 24, and B 29 and medium bombers B 25 and B 26. This 264 page manual covers all aspects of the C 1 system. This is an original loose leaf, stapled, unbound edition.