The principle of working from whole to part is used in surveying because ............

The plane table surveying is ............

An inverted level staff is held when ............

The angle of intersection of a curve is the angle between ............

The main object of running a tie line is ............

An example for instrument error in leveling is ............

The obstacle, which obstructs vision but not chaining is a ............

The reduced bearing of a line is N 87° W. Its whole bearing is ............

In case of a direct vernier scale ............