Marine Chronometers at Greenwich: A Catalogue of Marine Chronometers at the National Maritime Museum, Greenwich

ISBN : 9780199641383

Jonathan Betts
784 Pages
255 x 331 mm
Pub date
Jan 2018
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The Marine Chronometers at Greenwich is the fifth, and largest, of the distinguished series of catalogues of instruments in the collections of the National Maritime Museum. Housed at the Royal Observatory Greenwich - the 'home of time' and the Prime Meridian of the world - this extraordinary collection, which includes the celebrated marine timekeepers by John Harrison (1693-1776), is generally considered to be the finest of its kind in existence. The book is however much more than just a catalogue, and includes an accessible and engaging history of the chronometer, revealing why these instruments were important in our scientific and cultural history, and explaining, in simple terms, how they worked and were used. A comprehensive Glossary and Bibliography are included to ensure any technicalities are explained and that the reader has suggestions for useful 'further reading'. Over 480 photographs and illustrations, including many fine macro-photographs and line drawings, illustrate the 'jewel-like' beauty of the chronometer's construction and explain the function and subtleties of its mechanism. A chapter on 'How the Chronometer was Made', describes the fine sub-division of labour used to create these special machines, from bare metal, right up to delivery on board ship, and brief biographies of the makers tell the human story behind this important nineteenth-century industry. Another chapter, 'The Evolution of the Chronometer', aimed at collectors, historians and curators, provides clearly structured information on assessing and dating the chronometer, something many find difficult. And, for the dedicated specialist, there is extensive tabulated data on the technical structure of this important collection, a unique resource for future research.


Part I: The Origins of the Chronometer; The Story of the Chronometer; How the Marine Chronometer was Made; The Nineteenth-Century English Chronometer: A Guide to Assessing and Dating; Part II: Catalogue; The Marine Chronometers at Greenwich

About the author: 

Jonathan Betts comes from a family of retail watchmakers, based in Ipswich in Suffolk, and has been involved in Horology since childhood. Following school he studied Technical Horology for three years at Hackney College in East London (winning the national prize for practical work) after which he ran his own horological conservation business for five years in Ipswich. Between 1980 and 2015 he served as Senior Horology Conservator and Senior Curator of Horology at the Royal Observatory (National Maritime Museum). During that period, in his own time he has also undertaken the role of Horological Adviser to a number of major heritage organisations, including the National Trust, The Wallace Collection and the Harris (Belmont) Charity. In 2012, he was awarded an MBE '..for Services to Horology'.

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