Discover the Enduring legacy of John Harrison - the man who solved the problem of finding longitude at sea - in our London watch sale on 7 July. The second in a series of sales entitled the "Celebration of the English Watch" features some of the finest precision timekeepers of the English horological Golden Age. #SothebysWatches http://bit.ly/29ihe8Y | Sotheby's
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Longitude
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On this day in 1714, the Longitude Act was passed, which offered rewards for finding an accurate method for navigation at sea. Self-taught clock maker, John Harrison, would go on to take up the challenge. His timepieces, H1, H2, H3 and H4 revolutionised the history of timekeeping. Learn more about the longitude problem: https://bit.ly/longitudeRMG | Royal Museums Greenwich
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