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Ellicott, John
(1706 - 1772)
John Ellicott (1706-1772) was a late 18th-century English machinist and scientist. The son of a watchmaker also named John Ellicott, he is considered the successor to George Graham (1673-1751). He developed the cylinder escapement and used it in his watches, as well as a gridiron pendulum. He was appointed clockmaker to George III of England and a Fellow of the Royal Society. In addition to making clocks, he also manufactured other scientific instruments such as barometers.