Time measuring instruments
Subject
Subject Source: UK Archival Thesaurus
Found in 105 Collections and/or Records:
File
Remarks by chronometer-makers on Earnshaw's printed 'Explanation of Time Keepers', 1805
File
Reference Code: GBR/0180/RGO 14/27
Scope and Contents
From the Series:
The first part of collection is comprised of papers concerning the internal affairs of the Board of Longitude, including the granting of awards, accounts, minutes, committee papers, petitions and memorials, the loan of instruments, publications and the payment of staff. These are followed by a wide range of papers relating to the Board's work, concerning clocks, chronometers and other instruments; longitude and latitude; magnetic variation; schemes and inventions; tables; pendulum...
Dates:
1805
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
File
Reports on Royal Naval College chronometers, 1821 - 1834
File
Reference Code: GBR/0180/RGO 5/234
Scope and Contents
Lists of chronometers, 1821-1830, and of the mean daily rates of chronometers, 1830-1834, at the Royal Naval College, Portsmouth.
Dates:
1821 - 1834
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
Series
RGO Time Department: Papers, 1872 - 1989
Series
Reference Code: GBR/0180/RGO 43
Scope and Contents
Catalogue in progress. Further records will be uploaded over the coming months.
Dates:
1872 - 1989
Conditions Governing Access:
Part restricted. Much of this collection is as yet unprocessed. Requests to view unlisted material should be sent to els57@cam.ac.uk. Access to files RGO 43/78-81 is restricted until 80 years from the date of creation under the terms of the Data Protection Act 2018.
File
Trials and ratings of chronometers, 1822 - 1835
File
Reference Code: GBR/0180/RGO 5/239
Scope and Contents
Lists of chronometers deposited at the Observatory for trials, with the daily ratings of each piece, covering the periods 1822-1825 and 1832-1835.
Dates:
1822 - 1835
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).
File
Trials of Harrison's chronometers, 1766 - 1771
File
Reference Code: GBR/0180/RGO 4/311
Scope and Contents
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.
Dates:
1766 - 1771
Conditions Governing Access:
From the Management Group:
Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).