Q. A plumb bob is required (Solved)
1. when measuring distances along slopes in a hilly country
2. for accurate centering of a theodolite over a station mark
3. for testing the verticality of ranging poles
4. all of the above
- d. all of the above
1. when measuring distances along slopes in a hilly country
2. for accurate centering of a theodolite over a station mark
3. for testing the verticality of ranging poles
4. all of the above