A plumb bob is required
A)when measuring distances along slopes in a hilly country
B)for accurate centering of a theodolite over a station mark
C)for testing the verticality of ranging poles
D)all of the above

Question

Quizplus · Accepted Answer

A plumb bob is used in various surveying tasks including measuring distances along slopes, accurately centering instruments like theodolites over station marks, and ensuring the verticality of objects such as ranging poles.

A Plumb Bob Is Required