Portrait of John Harrison

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Illustration

Mark Cartwright
by Science Museum, London
published on 10 March 2023
Portrait of John Harrison Download Full Size Image

A c. 1767 portrait by Thomas King of the English clockmaker John Harrison (1693-1776) who invented the marine chronometer to accurately measure longitude. The chronometer he is holding is the H3, one of a series of five watches he made. (Science Museum, London)

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Cite This Work

APA Style

London, S. M. (2023, March 10). Portrait of John Harrison. World History Encyclopedia. Retrieved from https://www.worldhistory.org/image/17188/portrait-of-john-harrison/

Chicago Style

London, Science Museum,. "Portrait of John Harrison." World History Encyclopedia. Last modified March 10, 2023. https://www.worldhistory.org/image/17188/portrait-of-john-harrison/.

MLA Style

London, Science Museum,. "Portrait of John Harrison." World History Encyclopedia. World History Encyclopedia, 10 Mar 2023. Web. 31 Dec 2025.

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