Gyro Magnetic Compass & Course Indicator Slaved Type V-4 Sperry 21204 USAF OCAMA
This is a Slaved Gyro Magnetic Compass and Course Indicator Type V-4 made by Sperry spec # 21204. It has a service label from the US Air Force Tinker Air Base's OCAMA (Oklahoma City Air Materiel Area). OCAMA managed repairs and furnished spare parts for the B-52, B-47, C/KC-135, and certain other aircraft, but a specific link between this instrument and these aircraft has not been established. It has a serial # prefix of AF 50, likely indicating a manufacturing year of 1950. Measures 5.25in wide and ~11in deep.