Surveying
The slotted template method

All listed here
Is prepared, by graphical method
Is suitable for large areas with less control
Is rapid and accurate

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Surveying
For mapping any country

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

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