Surveying
If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is

13° W
23° S
77° N
13° E

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Surveying
For mapping any country

Geodetic triangulation of greatest possible sides and accuracy is carried out
Secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys
All listed here
Primary triangles are broken down into secondary triangles of somewhat lesser accuracy

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