Harrison, John, 1693 - 1776 (horologist)
Found in 11 Collections and/or Records:
Extracts from the Minutes of the Board of Longitude, including the findings on John Harrison's chronometers.
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.
'Notes on the Ownership of John Harrison's Timekeepers', a 9-page typescript by R.T. Gould, dated at the end 10 May 1937.
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.