A method of differential levelling is used in order to find the difference in elevation between two points when
A)they are too far apart
B)there are obstacles between them
C)the difference in elevation between them is too great
D)all of the above

Question

Quizplus · Accepted Answer

Differential levelling is used to find the elevation difference between two points regardless of the distance, obstacles, or elevation difference between them. It involves taking readings at different points along the line connecting the two points, thus overcoming any physical barriers or significant elevation changes.

A Method of Differential Levelling Is Used in Order to Find