HARRISON, JOHN

HARRISON, JOHN
   a celebrated mechanician, born at Foulby, Yorkshire; was the first to invent a chronometer which, by its ingenious apparatus for compensating the disturbing effects caused by variations of climate, enabled mariners to determine longitude to within a distance of 18 m.; by this invention he won a prize of £20,000 offered by Government; amongst other things he invented the compensating gridiron pendulum, still in use (1693-1776).

The Nuttall Encyclopaedia. . 1907.

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