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Harrison's eight-day clock movement, 1715.

Richardson, Claire

Harrison's eight-day clock movement, 1715.
4 0 c m
actual image size: 25cm x 32cm


This clock was made by the chronometer pioneer, John Harrison (1693-1776), at the age of 22, before he began his celebrated project to build a chronometer accurate enough to find a ship's longitude at sea. The clock movement is made almost entirely of wood; partly, it is thought, to reduce the need for lubrication, but also because Harrison was a carpenter by trade. The clock movement was weight-driven and would have been mounted in a long case with a pendulum. View of back.

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© Science Museum / Science & Society Picture Library

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