Sperry Gyro-Compass Repeater Mounted on Its Original Pelorus Stand (1919): Large brass pedestal (Pelorus) stand containing Sperry compass repeater. Compass Rose signed: 'Sperry Gyro-Compass Repeater, Patented March 4, 1919, Mark 15, Mod. 0'; Brass pedestal manufacturer's plate signed: Sperry Gyro-Compass, Pelorus Stand, Part - 643241, Ser - 24318; Wonderful piece of maritime history; 134 cm tall x 33 cm diameter