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30 observation books (numbered 31 to 63; there is an additional 39a, and 57 to 60 were not present on transfer). Book 1 also contains an additional loose page of 'Measurements etc. of Beacons' (21 x 33cm). Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at sca...
Astronomical observation books (numbered 1 to 41). Boundary section extends to Angola tripoint. Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.
42 traverse observation books (numbered A1 to A40; there is no book 5, but additional books 4-5, 5-6 and 33a) labelled 'field book' or 'field copy'. Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.
28 traverse observation books (numbered A41 to A69) labelled 'field book' or 'field copy'. Traverse observation books A70 to A98 were not present on transfer. However, office copies of these are filed at TRIG/26. Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets...
Anglo-Belgian Boundary Commission 1927-1933. Congo-Zambesi Watershed Section. Boundary and Triangulation Point Traverses. Topo[graphical]. Survey Traverse Observation Books (field copies).
Scope & Content:
Boundary traverse observation books (numbered A.99 to A.131). Traverses from triangulation points to boundary pillars, observation books (numbered B1 to B11). Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.
32 observation books (numbered C1 to C32); all are traverse books except C18 where observations were recorded in a horizontal and vertical angle book. Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.
Level observation books (numbered 18 to 27); some volumes are recorded in traverse books, but the data within are level values. Books 1 to 17 were not present on transfer. However office copies are at TRIG/27 and TRIG/28. Used in the compilation of Geographical Section, General Staff No. 4044,...
Level observation books (numbered 28 to 44); some volumes are recorded in traverse books, but the data within are level values. Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.
Traverse observation books numbered P.T.A. 1-18, 20, 21 and 23-33. Boundary section extends to Angola tripoint. Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.
Traverse observation books (numbered P.T.1 to P.T.9). Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.