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Harrisons First ChronometerThis photograph shows Harrisons first chronometer, developed between 1729 and 1735 in response to the British Government offer of a 20
John HarrisonJOHN HARRISON horologist, inventor of successful chronometer for determining longitude at sea
George GrahamGEORGE GRAHAM Horologist
John WhitehurstJOHN WHITEHURST horologist, and writer on weights and measures : Fellow of the Royal Society
Christian Huygens, Dutch scientistChristian (or Christiaan) Huygens, Dutch mathematician, physicist, horologist and astronomer, notable for his contributions to telescopes and to the nature of light