John Harrison, English inventor and horologist, 18th century.

Smith, J R

 
John Harrison, English inventor and horologist, 18th century.
4 0 c m
 
31cm
actual image size: 23cm x 32cm

Description

Mezzotint engraved by J R Smith from a painting by J Wright. Harrison (1693-1776) became famous for resolving one of the most problematic isues of his day - how to determine longitude while at sea. This was to take him over forty years, during which time he devised many other ways to improve the accuracy of time-keeping.

© Science Museum / Science & Society Picture Library

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