state the purpose of simple levelling
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velling (British English) or leveling (American English; see spelling differences) is a branch of surveying, the object of which is to
Find the elevation of a given point with respect to the given or assumed datum.
Establish a point at a given elevation with respect to the given or assumed datum.
Levelling is the measurement of geodetic height using an optical levelling instrument and a level staff or rod having a numbered scale. Common levelling instruments include the spirit level, the dumpy level, the digital level, and the laser level.
Find the elevation of a given point with respect to the given or assumed datum.
Establish a point at a given elevation with respect to the given or assumed datum.
Levelling is the measurement of geodetic height using an optical levelling instrument and a level staff or rod having a numbered scale. Common levelling instruments include the spirit level, the dumpy level, the digital level, and the laser level.
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