Sperry Marine Gyro-Compass and Gyro-Pilot Manual 1944 Regia Aeronautica the need for the contactor

the need for the contactor disappeared and true IFF (Identification Friend or Foe) transponders took their place

likely indicating negative or positive draw

that 's a stretch) Any insights

all for the elimination of errors caused by magnetism

Here is an original WWII-era 31-page booklet on the Fundamentals of Air Fighting

Sperry Marine Gyro-Compass and Gyro-Pilot Manual 1944 Regia Aeronautica the need for the contactorThis is an original hard copy manual for the Sperry Gyro Compass and Gyro Pilot system used in sea vessels during the 1940's and 1950's. The ~60 page manual describes the operation and maintenance of the system. It is full of text, illustrations, and diagrams. It was published in 1944, and is in very good condition.