Harrison's marine timekeeper H4 by John Harrison

Harrison's marine timekeeper H4

John Harrison

Fine art poster

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  • Amazing giclée print quality
  • 280gsm thick fine art print paper
  • 100+ year colour guarantee
  • Dimensions:
    • x cm including border ( x in)
    • x cm excluding border ( x in)
£14.95

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We use a 280gsm fine art paper and premium branded inks to create the perfect reproduction.

Our expertise and use of high-quality materials means that our print colours are independently verified to last between 100 and 200 years.

Read more about our fine art prints.

Manufactured in the UK

All products are printed in the UK, using the latest digital presses and a giclée printmaking process.

We only use premium branded inks, and colours are independently verified to last between 100 and 200 years.

Delivery & returns

We print everything to order so delivery times may vary but all unframed prints are despatched within 2-4 days via courier or recorded mail.

Delivery to the UK is £5 for an unframed print of any size.

We will happily replace your order if everything isn’t 100% perfect.

Harrison's marine timekeeper H4 by John Harrison zoom

Harrison's marine timekeeper H4

This is Harrison's prize-winning longitude watch, completed in 1759. Harrison had been working on improving watches as a sideline to his development of the much larger H3. In 1753 a pocket watch was made to Harrison's design by watchmaker John Jefferys. This went so well that Harrison began to realise that it pointed to the longitude solution - not in H3 but in smaller watches. Work began on H4 in 1755 and, with its very stable, high frequency balance, it proved the successful design.
John Harrison

  • Image reference: F7024-002

Discover more

More by the artist John Harrison.

Explore the collection John Harrison and the Longitude.