Marine timekeeper H3 with case by John Harrison

Marine timekeeper H3 with case

John Harrison

Framed picture

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  • Premium wooden frame with a thick bevel-cut mount
  • Fully strung, ready-to-hang
  • 100+ year colour guarantee
  • Dimensions:
    • by cm overall size ( by in)
    • by cm artwork size ( by in)
£79.95

Image information

Time and space
Part of the Time and space Collection
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Sizing information

Dimensions
Overall size (inc frame) x cm ( x in)
Depth cm (in)
Artwork x cm ( x in)
Border (mount) cm top/bottom (in)
cm left/right (in)
The paper size of our wall art shipped from the US is sized to the nearest inch.
Nelson was 5ft4in or 1.62m
Nelson was 5'4" (1.62m)

Marine timekeeper H3 with case

Marine timekeeper, H3. Started in 1740, this third timekeeper took Harrison nearly 19 years to build and adjust, although it was not to win him the great longitude prize: he found that he just could not persuade the two large, heavy, circular balances to keep time well enough. Nevertheless, H3 incorporates two extremely important inventions, both relevant today: the bimetallic strip (still in use worldwide in thermostats of all kinds) and the caged roller bearing, a device found in nearly all modern mechanical engineering. See also ZAA0034 (H1), ZAA0035 (H2) and ZAA0037 (H4).
John Harrison

  • Image reference: D6785_5
  • National Maritime Museum, Greenwich, London, Ministry of Defence Art Collection

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Marine timekeeper H3 with case by John Harrison
Detail of Marine timekeeper H3 with case by John Harrison

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