Antieke klokken

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a clock that is sitting on top of a table
ProClocks · Regal H-1 Grasshopper Clock
Regal H-1 Grasshopper Clock
an image of a clock on top of a machine with words above it that read,
HALFWAY POINT 1
John Harrison's famous H1 marine chronometer. John Harrison had built a series of marine chronometers in a quest to win a large prize established by the British government. The Board of Longitude was responsible for awarding the prize of 20,000 Pounds (about $15 million today) to anyone who could solve the problem of finding longitude at sea.