1) Applied scientist 2) Artificer 3) Boat shoe brand 4) Discoverer 5) Elmer ambrose sperry 6) Engineer 7) Gyro inventor 8) Gyrocompass inventor 9) Gyrocompass inventor Elmer 10) Gyroscope innovator 11) Gyroscope inventor 12) Inventor 13) Maker of Top-Siders 14) Name with rand, before unisys 15) Technologist 
[n] - United States engineer and inventor of the gyrocompass (1860-1930)
Elmer Ambrose Sperry noun United States engineer and inventor of the gyrocompass (1860-1930)