Sperry Marine Gyro-Compass and Gyro-Pilot Manual 1944

This 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.