Maskelyne, Nevil, 1732 - 1811 (astronomer and mathematician)
Found in 5 Collections and/or Records:
'An Account of the going of Dr Maskelyne's new Chronometer N.309 made by Mr T. Earnshaw', 1799 - 1811
Also contains results for 'A continuation of the trial of the late Dr. Postlethwaite's watch' from 12 August - 30 September 1799.
The draft letter is addressed to 'My Lord' and is a response to John Harrison's applications to the Board of Longitude and to Parliament to get a second £10,000 in reward money for his marine timekeepers. The letter continues with notes on longitude determination and marine timekeepers by other makers.
Observations on the workings of John Harrison's time-keeper, in two parts.
Observations and comparisons during the trials of John Harrison's chronometers (H1, H2, H3 and H4) and Kendall I, with mean solar time, 1766-1767, and the rating of the Royal Observatory transit clock, 1771. The volume is comprised largely of tables of measurements, with some descriptions of how the results were achieved.
- Subject: Time measuring instruments X