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Chapter:

Levelling

At a given point, atmospheric pressure doesn’t remain constant in course of day, even in course of an hour.


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This Chapter Levelling consists of the following topics

Which of the following methods of levelling makes use of the phenomenon that difference in elevation between two points is proportional to the difference in atmospheric pressures at these points?

At a given point, atmospheric pressure doesn’t remain constant in course of day, even in course of an hour.

Which process of levelling in which the elevations of points are computed from the vertical angles and horizontal distances measured in the field?

At a given point

the atmospheric pressure doesn’t remain constant in the course of the day

even in the course of an hour.

Levelling

Surveying