Sperry Marine Gyro-Compass and Gyro-Pilot Manual 1944 Regia Aeronautica It is in superb condition

It is in superb condition given its 1944 date of manufacture

all for the elimination of errors caused by magnetism

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

likely indicating negative or positive draw

This is an excellent specimen of the Contact Altimeter (Kontakt-Hohenmesser) Fl

Sperry Marine Gyro-Compass and Gyro-Pilot Manual 1944 Regia Aeronautica It is in superb conditionThis 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.