"Sperry, Elmer Ambrose"@en . . . "1930Z"^^ . "American mechanical engineer" . . . . . . "1860Z"^^ . . . "1930-06-16Z"^^ . "1860-10-12Z"^^ . . "Elmer Ambrose Sperry, Sr. (October 12, 1860 \u2013 June 16, 1930) was an American inventor and entrepreneur, most famous as co-inventor, with Herman Ansch\u00FCtz-Kaempfe of the gyrocompass. His compasses and stabilizers were adopted by the United States Navy and used in both world wars. He also worked closely with Japanese companies and the Japanese government and was honored after his death with a biography in his honor."@en . "Elmer Ambrose Sperry, Sr."@en . . . .