Harrison, John, 1693 - 1776 (horologist)
Found in 37 Collections and/or Records:
Acts relating to the formation of the Board of Longitude and the proposal of a reward for the discovery of an accurate method of finding longitude at sea, 1713 - 1821
There are Supplementary Acts regarding navigation and surveying the chief ports and headlands of Great Britain and Ireland; John Harrison and his chronometer; and discovering a northern passage between the Atlantic and Pacific Oceans and for making a journey to the North Pole.
Correspondence with the National Maritime Museum, including correspondence with Mr Carr concerning his visit to the U.S.A.; correspondence with the Science Museum Advisory Council regarding a collection of historical aircraft and an exhibition of rockets; correspondence concerning Sheepshank's Equatorial; and correspondence on the bi-centenary of the trial of Harrison's No. 4.
A set of drawings of a chronometer by John Harrison. RGO 116/8/3 is by Thomas Bradley.
Extracts from the Minutes of the Board of Longitude, including the findings on John Harrison's chronometers.
General correspondence with Queen Mary College, London; Australian correspondents; and others. The subjects include stocks and shares and a foreword written by Sir Richard Woolley for a book on John Harrison by Colonel H. Quill.
Presentation pack containing four stamps of John Harrison’s Marine Timekeeper No.4 (24p, 28p, 33p and 39p) and a Harrison information sheet.
Also, first day cover with printed images of Harrison and a ship at sea; the four 'Marine Timekeepers’ stamps are affixed and postmarked by the British Philatelic Bureau, Edinburgh.
Letter asking which chronometers were at the Royal Observatory, Greenwich and enquiring whether John Harrison's chronometer was there, 1835-03-14
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.
Letter concerning his solution for finding longitude, in which Judson makes reference to [John] Harrison's timepiece.
Two letters and a plan submitted by Gillespie to the Board of Longitude, with copies of two letters of reply from Thomas Hurd.
The log book of HMS Resolution compiled by William Wales during the passage to the South Seas under the command of Captain James Cook.
A log book by Maskelyne of a voyage to Barbados, split into three parts.
A record of observations at sea with calculations and notes, including notes on observations of Jupiter's satellites and on his chronometers during his voyage to Barbados [to test John Harrison's chronometer H4].
A rough copy of observations of major stars made in 1758 and on a voyage of 1764. The volume includes adjustments to the barometer and atmospheric conditions, 1758; calculations of star positions; the longitude of various foreign towns; corrections to the sextant and quadrant; and calculations to discover longitude.
'Notes on the Ownership of John Harrison's Timekeepers', a 9-page typescript by R.T. Gould, dated at the end 10 May 1937.