Colby, Thomas Frederick, 1784 - 1852 (Major General, Director of Ordnance Survey)
Person
Found in 2 Collections and/or Records:
File
Papers on geodetic surveys and longitudes, 1836 - 1848
File
Reference Code: GBR/0180/RGO 6/417
Scope and Contents
Material concerning work on the geodetic surveys and longitudes in Britain, Europe and India. The papers include two maps of triangulations in Ireland (one on a smaller scale); a plan of principal triangles in Britain; a map of triangulations in Germany; a sketch of triangulations at Royston, Bedfordshire; calculations to find the latitude and longitude of Ben Lomond; triangulations in Scotland and on the Shetland Isles; disturbances of gravity of Shanklin Down, Isle of Wright, with a list...
Dates:
1836 - 1848
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
Papers on the Geodetic Zenith Sector, 1836 - 1846
File
Reference Code: GBR/0180/RGO 6/416
Scope and Contents
Material concerning work with the Geodetic Zenith Sector for the trigonometrical survey of the United Kingdom. There are observations of stars with the zenith sector; papers on adjustments and equipment alterations to the instruments; sketches of instruments; zenith distances; proceedings of the Royal Astronomical Society; and a map of principal triangles in the United Kingdom. There is also correspondence with T.W. Colby, W. Denison, W. Yolland, W. Simms, J. Hornby and D.J.F. Arago.
Dates:
1836 - 1846
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).
Filtered By
- Subject: Geodesy X
Additional filters:
- Subject
- Ben Lomond 1
- Germany 1
- India 1
- Ireland 1
- Longitude 1