Quote:
Originally Posted by padi56
But looking at the other sign of the coin today any modern day wristwatch chronometers are, by the almost 300 year old 18Th century navigational standards imposed on John Harrison H4 watch,quite laughably inaccurate even by todays standards.How about just 5 seconds slow after 63 days at sea,not bad for a almost 300 year old watch.When you think he had very primitive tools by todays standards all hand made no computer aided help now thats a real watchmaker.
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Longitude should be required reading for this forum. Great book.