One key, for Motor Control panel in locked cabinet, for Sperry Gyrocompass, by Sperry Gyroscope Company Limited, Brentford, Middlesex, England, 1949-1954 One key, for locked cabinet housing control panel, for Sperry Gyrocompass 1949-1954
Motor Control panel in locked cabinet, for Sperry Gyrocompass, by Sperry Gyroscope Company Limited, Brentford, Middlesex, England, 1949-1954 Control panel, for Sperry Gyrocompass 1949-1954