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Levelling is the name given to the process of measuring the difference in elevation between two or more points. In engineering surveying, levelling has many applications and is used at all stages in construction projects from the initial site survey through to the final setting out. Specialised equipment is required to undertake levelling: an optical level with its tripod and a levelling staff.
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2.13 Further Reading
- M. A. R. Cooper, Modern Theodolites and Levels, 2nd Edition (Granada, London, 1982).Google Scholar