Principles and Explanations of Timekeepers - Arnold And Earnshaw Harrison - Jonathan Betts. This item is unavailable.Principles and Explanations of Timekeepers - Arnold And Earnshaw Harrison - Jonathan Betts

THERE ARE NO TARIFFS OR CUSTOMS DUTIES ON BOOKS. Half bound in brown leather with marbled boards, gilt lettering and decoration to spine. Illustrations in b/w, some fold-out. An introduction to and facsimile reprint of papers published by the Commissioners of Longitude about Harrison's, Arnold's and Earnshaw's chronometers in 1767, 1805 and 1806. A very good copy of the edition published in 1984, the British Horological Institute's 125th anniversary year. Remains of the original glassine wrapper present but with sections missing.