Reconstruction Of The John Harrison H4, The World’s First Precision Marine Chronometer, By Derek Pratt And Roger Stevenson/Frodsham - Quill & Pad
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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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