Ordnance Survey: Trigonometrical and Levelling Divisions: Magnetic Surveys

Details of OS 6
Reference:OS 6
Title:
Ordnance Survey: Trigonometrical and Levelling Divisions: Magnetic Surveys
Description:

This series contains records of magnetic surveys undertaken by G W Walker and H L P Jolly. The records consist of three types of books:

  • Descriptions of stations, containing locating details for the magnetic survey stations.
  • Computation books, containing computations to find the geographical co-ordinates and azimuths for the magnetic survey stations.
  • Calculation books, containing calculations to obtain the magnetic variations of specific points in Great Britain.

Date: 1914-1933
Held by: The National Archives, Kew
Legal status: Public Record
Language: English
Physical description: 12 volume(s)

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