movement of Harrison's fourth timekeeper, H4, at the Royal Observatory, Greenwich, London, England, UK

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Size: 3418px × 3344px
Location: Royal Observatory, Greenwich, London, England, UK
Photo credit: © Digital Image Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 4th, chronometer, clock, close, close-, greenwich, h4, harrison, harrisons, longitude, marine, mechanism, movement, observatory, problem, royal, solution, timekeeper, timepiece, watch