Language: English / Digitised Content: No - British Library Archives and Manuscripts Catalogue Search Results

Reference (shelfmark):: TRIG
Title:: War Office/Ministry of Defence Trigonometrical/Geodetic Library Material
Scope & Content:: Survey materials and their derivatives used in the compilation and revision of maps to support the geographical requirements of the United Kingdom government and armed forces. The library primarily comprises survey control items including surveyors' field observations, computations, grid and gra...
Collection Area:: Map Collections
Languages:: English
Date Range:: 1880-2nd half of 20th century
Extent:: 77 boxes comprising survey observation books, maps, foolscap folios and technical reports

Reference (shelfmark):: TRIG/1
Title:: Anglo-Belgian Boundary Commission 1927-1933. Congo-Zambesi Watershed Section. 1927-8-9. Folders 1-6 and Index.
Scope & Content:: Survey observations and computations along the Northern Rhodesia-Belgian Congo boundary. Comprises: File index [to TRIG/1 to TRIG/5] (2 folios) Index card (1 folio) Folder 1. Record of Observations Folder 2. Computation of Geographical Co-ordinates Folder 3. Computation of Heights Folder 4. Comp...
Collection Area:: Map Collections
Languages:: English
Date Range:: 1927-1930
Extent:: 6 folders and 3 folios

Reference (shelfmark):: TRIG/2
Title:: Anglo-Belgian Boundary Commission 1927-1933. Congo-Zambesi Watershed Section. 1927-8-9. Folders 7-11.
Scope & Content:: Survey observations and computations along the Northern Rhodesia-Belgian Congo boundary. Comprises: Folder 7. Boundary Traverse Folder 8. Boundary Traverse Folder 9. External Traverse Computations Folder 10. Final Results Ruling Triangulation Folder 11. Final Results Minor Triangulation Used in ...
Collection Area:: Map Collections
Languages:: English
Date Range:: 1927-1930
Extent:: 5 folders

Reference (shelfmark):: TRIG/3
Title:: Anglo-Belgian Boundary Commission 1927-1933. Congo-Zambesi Watershed Section. 1927-8-9. Folders 12-19.
Scope & Content:: Survey observations and computations along the Northern Rhodesia-Belgian Congo boundary. Comprises: Folder 12. List of Geographical and Rectangular Co-ordinates of Main Boundary Pillars Folder 13. Description of Trig. Stations Folder 14. Solution of Major Triangles [including Descriptions of Tri...
Collection Area:: Map Collections
Languages:: English
Date Range:: 1927-1930
Extent:: 8 folders

Reference (shelfmark):: TRIG/4
Title:: Anglo-Belgian Boundary Commission 1927-1933. Congo-Zambesi Watershed Section. 1927-8-9. Folders 20-30.
Scope & Content:: Survey observations and computations along the Northern Rhodesia-Belgian Congo boundary. Comprises: Folder 20. Record of Observations Folder 21. Geographical Co-ordinates Folder 22. Solution of Major Triangles Folder 23. Solution of Minor Triangles Folder 24. Heights Folder 25. Boundary Traverse...
Collection Area:: Map Collections
Languages:: English
Date Range:: 1927-1930
Extent:: 11 folders

Reference (shelfmark):: TRIG/5
Title:: Anglo-Belgian Boundary Commission 1927-1933. Congo-Zambesi Watershed Section. 1927-8-9. Folders A-H.
Scope & Content:: Survey observations and computations along the Northern Rhodesia-Belgian Congo boundary. Comprises: Folder A. Latitude and Azimuth Folder B. Latitude and Azimuth Folder C. Time Observations for Longitude Folder D. Latitudes Folder E. Chronograph Time Charts Folder F. Chronograph Records Folder G...
Collection Area:: Map Collections
Languages:: English
Date Range:: 1929
Extent:: 8 folders

Reference (shelfmark):: TRIG/6
Title:: Anglo-Belgian Boundary Commission 1927-1933. Whole boundary. Folders 31-39.
Scope & Content:: Records of survey observations, computations and station descriptions, including Belgian values, along the Northern Rhodesia-Belgian Congo boundary. Extends to Angola tripoint. Includes some fold-out maps. Comprises: Folder 31. Technical Report Folder 32. Belgian Values Folder 33. Record of Obse...
Collection Area:: Map Collections
Languages:: English and French
Date Range:: 1929-1933
Extent:: 9 folders

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