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Blue plaque, John Harrison

Blue plaque
Blue plaque, John Harrison
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What is recorded here

Blue plaque, John Harrison is shown and named in a reusable Geograph picture. The saved point is the picture's recorded map point.
John Harrison was an 18th-century clockmaker who solved the problem of determining longitude at sea, significantly improving maritime navigation and safety.

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Photo: Mike Kirby · CC BY-SA 2.0