Notes on Harrison's timekeeper
Royal Greenwich Observatory Archives, The Board of Longitude, Papers of Nevil Maskelyne, Notes on Harrison's timekeeper, RGO 4/152
Summary - Description:
Notes taken at the discovery of Mr Harrison's time-keeper' - observations on the accuracy of John Harrison's clock, made on a voyage to Barbados, 1765, and including the method employed to examine the clock, its efficiency and areas which could be improved.
Type of Source:
- E.G. Forbes, The Principles of Mr Harrison's Time-keeper (London, 1767)
Mesure du Temps, Précision des instruments d’observation