Ordnance Survey: Trigonometrical and Levelling Divisions: Triangulation Stations, files

Details of OS 69
Reference:OS 69
Title:
Ordnance Survey: Trigonometrical and Levelling Divisions: Triangulation Stations, files
Description:

The records in this series relate to the retriangulation of Great Britain begun in 1935, and constantly updated since, until finally superseded in the late 1990s.

The series contains the triangulation station files. These are a working record for each station, containing a site map and sketch for ease of location, the history of the station (when planned and built, with details of events), and observing details. The Ordnance Survey Act of 1841 gave Ordnance Survey's surveyors a legal right to enter into and upon any land for survey purposes. Details of the Landowner are therefore also held in the files. Files may also contain photographic images.

Date: 1935-2008
Held by: The National Archives, Kew
Legal status: Public Record
Language: English
Creator: Ordnance Survey of Great Britain, Directorate of Data Collection, 1994-2003
Ordnance Survey of Great Britain, Directorate of Data Collection and Management, 2003-
Ordnance Survey of Great Britain, Directorate of Field Survey, 1946-1973
Ordnance Survey of Great Britain, Directorate of Surveys and Production, 1979-1994
Ordnance Survey of Great Britain, Field Surveys Directorate, 1974-1978
Ordnance Survey, Trigonometrical and Levelling Division, 1935-1946
Physical description: 24557 file(s)
Access conditions: Open unless otherwise stated
Immediate source of acquisition: Ordnance Survey , from 2011
Selection and destruction information: Acquisiton Policy criteria 3.2 Interaction of the state with its citizens and its impact on and documentation of the physical environment.
Accruals: This series will accrue.

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