Computer · Surveying
Reciprocal levelling is employed to determine the accurate difference in the level of two points which:
- 1are quite close and where it is not possible to set up the instrument midway between the points
- 2are quite apart and where it is not possible to set up the instrument midway between the points✓
- 3are at almost the same elevation
- 4have very large difference in level and two instrument settings are required to determine the difference in level
Correct answer
are quite apart and where it is not possible to set up the instrument midway between the points
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