Following one of the most inspiring and fascinating stories linked to the Royal Observatory, Greenwich, this book centres on the life and achievements of John Harrison designer and builder of the first accurate marine timekeepers. Harrison is a fascinating account of one man driven by the need to solve one of the greatest practical problems of his time. This new edition has more than 40 illustrations, including drawings of the clocks mechanisms. Fresh insights on Harrison and his achievements are joined by a new section on Rupert Gould, the man who restored Harrison s timepieces in the inter-war years.