John Harrison's "H1" clock in action

John Harrison's "H1" was his first attempt at a clock that could survive sea-travel without losing time.  This was in response to the "Longitude Rewards" (a challenge to develop a reliable system for determining Longitude while at sea).  It was not accurate enough, so a another clock was attempted.

This is the original "H1" clock, which is now in the care of the Royal Observatory Greenwich.

John Harrison (https://en.wikipedia.org/wiki/John_Ha...)
Longitude Rewards (https://en.wikipedia.org/wiki/Longitu...)

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• #john_harrison
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• #royal_observatory_greenwich
• #longitude_rewards