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Escapement model by Thomas Earnshaw

In order to satisfy themselves as to the actual function of the spring detent escapement for marine timekeepers, in March 1804 the Board of Longitude...

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Thomas Earnshaw (1749-1829)

Thomas Earnshaw was a watchmaker who improved and simplified the pioneering chronometer designs of John Harrison (1693-1776) and John Arnold (1736-1799),...

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Thomas Earnshaw, 1749-1829

A half-length portrait to the left seated, wearing a brown coat and yellow waistcoat. His right hand rests on a table holding a quill beyond which is a...

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Collection item

Model of Earnshaw's escapement

In order to satisfy themselves as to the actual function of the spring detent escapement for marine timekeepers, in March 1804 the Board of Longitude...

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