Time measuring instruments
Subject
Subject Source: UK Archival Thesaurus
Found in 103 Collections and/or Records:
File
Correspondence on chronometers for India, 1894 - 1910
File
Reference Code: GBR/0180/RGO 7/93
Scope and Contents
Correspondence regarding chronometers supplied to the Indian Government:Correspondence with the India Office concerning the trial of three chronometers ordered from Johannsen and Co. for the Mathematical Instrument Office, Calcutta, 1894.Correspondence concerning a request by the India Office that chronometers to be shipped out to India should be securely packed by the Royal Observatory ready for export, 1894.Correspondence with the India Office concerning the trial...
Dates:
1894 - 1910
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
Correspondence on chronometers for India, 1908 - 1938
File
Reference Code: GBR/0180/RGO 7/94
Scope and Contents
Correspondence regarding chronometers supplied to the Indian Government:Correspondence with the India Office and various chronometer-makers concerning the supply, trial and purchase of chronometers and chronograph watches for the Marine Department, Bombay, 1908-1909.Correspondence with the India Office concerning the trial and purchase of chronometers for the Government Observatory, Colaba, and for the Mathematical Instrument Office, Calcutta, 1908-1910.Correspondence...
Dates:
1908 - 1938
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
Correspondence on clocks, 1925 - 1946
File
Reference Code: GBR/0180/RGO 8/29
Scope and Contents
Correspondence concerning clocks, time and the 24-hour time system, including the following material:(1) Non-Observatory clocksMemorandum on the history of 'Joseph Knibb', 17th-century London clockmakers, 1925.Correspondence between Ethel M. Knocker, British Columbia, and Sir Frank Dyson regarding the history of Joseph Knibb, 1925.(2) Non-Observatory chronographs and transitsCorrespondence between Sir Harold Spencer Jones and the Mercantile Marine...
Dates:
1925 - 1946
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
Correspondence on clocks and chronographs, 1880 - 1937
File
Reference Code: GBR/0180/RGO 8/149
Scope and Contents
Correspondence regarding clocks and chronographs, including correspondence with the Japanese Consul and E. Dent and Co. on a chronograph for the Japanese Government, 1880; and correspondence relating to various inventions associated with clocks, 1886-1937, including Mr Schoof's gravity escapement (1897), the Synchronome Co. Ltd's synchronised pendulum (1937), Mr Gordon's pneumatic clock system (1886), and R.W. Nichol's pendulum (1913).
Dates:
1880 - 1937
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
Correspondence on finding latitude, 1787 - 1828
File
Reference Code: GBR/0180/RGO 14/41
Scope and Contents
Correspondence regarding methods for establishing latitude.
Dates:
1787 - 1828
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
Correspondence on hack watch trials, 1905 - 1916
File
Reference Code: GBR/0180/RGO 7/109
Scope and Contents
Correspondence concerning the trial and purchase of hack watches, 1905-1911 and 1912-1916, including correspondence with the chronometer manufacturers and the Hydrographer of the Navy and notes and memoranda concerning the trial and individual watches.
Dates:
1905 - 1916
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
Correspondence on horology, 1941 - 1958
File
Reference Code: GBR/0180/RGO 9/359
Scope and Contents
Miscellaneous correspondence regarding horology, including letters concerning radiation hazards in the Chronometer Department of the Royal Greenwich Observatory, 1958; correspondence concerning the training of Abdul Salim as a watch repairer, 1955; and correspondence regarding the use of Ragasine oil in the watch industry, 1948-1949.
Dates:
1941 - 1958
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
Correspondence on magnetograph clocks, 1948 - 1960
File
Reference Code: GBR/0180/RGO 9/356
Scope and Contents
Correspondence regarding the magnetograph clocks at the Abinger Magnetic Observatory, including details of repairs.
Dates:
1948 - 1960
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
Correspondence on schemes and inventions, 1785 - 1829
File
Reference Code: GBR/0180/RGO 14/45
Scope and Contents
Correspondence regarding miscellaneous schemes and inventions.
Dates:
1785 - 1829
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
Correspondence on time-keepers, 1914 - 1938
File
Reference Code: GBR/0180/RGO 8/40
Scope and Contents
Correspondence relating to chronographs, clocks, time balls and time signals, including the following material:
Correspondence with E. Dent and Co. concerning a new time ball, 1914-1920.
Correspondence regarding a new standard astronomical clock and Riefler clocks, 1919-1925.
Correspondence regarding repairs to clocks and chronographs, 1917-1938.
Correspondence concerning the sale of regulators, 1932.
Dates:
1914 - 1938
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
Correspondence on time signals, 1879 - 1880
File
Reference Code: GBR/0180/RGO 15/108
Scope and Contents
Correspondence regarding the operation of various time signals, divided into the following sections:'Time Signals. General Manager of Telegraphs': correspondence between D. Gill and managers of the Telegraph Department on the operation or failure of the time balls, 1879-1890.'Time Signal and Clocks at Cape Town Docks': correspondence between D. Gill and the Table Bay Dock and Breakwater Trustees, Cape Town, concerning the operation of the clocks at the dock and the time ball,...
Dates:
1879 - 1880
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
Correspondence on time signals, 1902 - 1936
File
Reference Code: GBR/0180/RGO 8/146
Scope and Contents
Correspondence concerning time signals, including the following material:Correspondence with E. Dent and Co. regarding irregularities in the Westminster Clock, tables of errors for the clock and newspaper cuttings relating to it, 1902-1906.Correspondence regarding the installation of a wireless-telegraph receiving station at Greenwich, 1912-1914.Correspondence of 1912-1915 regarding the inauguration of a wireless-telegraph time service from the Eiffel Tower and...
Dates:
1902 - 1936
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
Correspondence regarding geodesy, pendulum experiments and the longitude of Madeira, 1786 - 1830
File
Reference Code: GBR/0180/RGO 14/49
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:
1786 - 1830
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
Correspondence regarding methods and instruments used to establish longitude and the use of chronometers at sea, 1783 - 1828
File
Reference Code: GBR/0180/RGO 14/38
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:
1783 - 1828
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
Correspondence regarding methods of establishing longitude by Jupiter's satellites, the planets and fixed stars, 1803 - 1828
File
Reference Code: GBR/0180/RGO 14/37
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:
1803 - 1828
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
Correspondence regarding miscellaneous schemes and inventions, 1784 - 1826
File
Reference Code: GBR/0180/RGO 14/44
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:
1784 - 1826
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
Correspondence with the Admiralty, 1821 - 1826
File
Reference Code: GBR/0180/RGO 5/229
Scope and Contents
Correspondence between the Admiralty Office and the Royal Observatory, Greenwich, requesting the loan of chronometers for H M Ships. The principal recipient is John Pond; the principal correspondent is John Barrow. Other correspondents include John Croker, Richard S. Dundas, G. Smith, John Franklin and Sir William Edward Parry.
Dates:
1821 - 1826
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
Extracts from Board of Longitude minutes, 1737 - 1761
File
Reference Code: GBR/0180/RGO 4/310
Scope and Contents
Extracts from the Minutes of the Board of Longitude, including the findings on John Harrison's chronometers.
Dates:
1737 - 1761
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
Harrison MS on Clock No. 1, 1985
File
Reference Code: GBR/0180/RGO 35/131
Scope and Contents
Photostats of a manuscript written by John Harrison in 1730 concerning the construction of his first marine chronometer. The document describes the problem of finding longitude at sea, the solution of using a marine timekeeper, the accuracy of contemporary clocks, errors in pendulum regulators and their correction, and the effects of temperature on clocks. It continues with notes on the construction of Harrison's chronometer, including the theory employed and compensations introduced. There...
Dates:
1985
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
John Gottlieb Ulrich's specification for the escapement of a marine chronometer, 1824 - 1829
File
Reference Code: GBR/0180/RGO 14/28
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:
1824 - 1829
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
Letter book containing outgoing correspondence, 1782 - 1810
File
Reference Code: GBR/0180/RGO 14/9
Scope and Contents
Outgoing correspondence regarding many astronomical and nautical subjects, including accounts with printers, the production of the 'Nautical Almanac', expeditions to Australia, a reward for a method of making glass of a sufficient quality for instruments, the trial of various timepieces and their employment on board Royal Navy vessels, replies to projectors proposing various methods of finding longitude at sea, and instructions for astronomers (including William Gooch on board the Daedalus...
Dates:
1782 - 1810
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).
Item
Letter from Nevil Maskelyne, 1765
Item
Reference Code: GBR/0180/RGO 4/187/48: 1-2
Scope and Contents
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.
Dates:
1765
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
Letters from chronometer makers, 1821 - 1835
File
Reference Code: GBR/0180/RGO 5/237
Scope and Contents
Letters and declarations to Pond from chronometer makers, including Robert Molyneux, Parkinson & Frodsham, Thomas Earnshaw and E.J. Dent. The volume also includes five undated lists of makers' estimates for repair from Arnold and Arnold & Dent.
Dates:
1821 - 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
Material on Harrison's timekeepers, 1931 - 1966
File
Reference Code: GBR/0180/RGO 74/1/9
Scope and Contents
Bound extracts from 'The Observatory', No. 687, August 1931, pp. 213-216; No. 699, August 1932, p. 236; and No. 709, June 1933, pp 193-196, regarding John Harrison's chronometers. In a pocket at the front of the booklet are postcard photographs of Harrison's first, second and third marine timekeepers, and various letters to Melotte dated 1942-1948. In a pocket at the back are five photographs of Harrison's timekeepers and of a copy by Larcum Kendall, and a letter from Kathleen Melotte, 26...
Dates:
1931 - 1966
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
Nathy O'Hora Papers, 1913 - 1927, bulk: 1946 - 2014
Series
Reference Code: GBR/0180/RGO 219
Scope and Contents
The Nathy O'Hora papers include the research, publications, and presentations of himself, others, and the RGO. This research notably includes eclipses, a topic to which O'Hora devoted considerable time after retiring. The collection also includes papers and correspondence relating to the Time Department where he worked, his notebooks on various scientific theories and practices, ledgers that he used to record weather data, newspaper clippings, and photographs.
Dates:
1913 - 1927; Majority of material found within 1946 - 2014
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).