A Gallery of 30 Industrial Revolution Inventions (Image Gallery) p. 19

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by Mark Cartwright
published on 20 April 2023

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Harrison's H5 Marine Chronometer

by Science Museum, London
published on 10 March 2023

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Harrison's H5 Marine Chronometer — View Full-Size Image

The H5 marine chronometer, designed and built by the English clockmaker John Harrison (1693-1776). This was the last in the series of chronometers Harrison made for mariners to better measure longitude and so define their position at sea. Harrison's chronometer was extremely accurate, in tests it lost just one-third of a second per day. Silver with a white enamel face. Made in 1770.

Science Museum, London.

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