While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the leveling staff and the cross hairs. The instrument is ............

The true meridian of a place is the line in which earth's surface in intersected by a plane through ............

Contour interval, within the limits of a map ............

The rise and fall method ............

If L is the distance between two supports from which a tape is suspended under a pull P. If W is the total weight of the…

An imaginary line joining the points of equal elevation on the surface of the earth, represents ............

Handles of chains are made up of ............

Theory of probability is applied to ............

Ranging in chain survey means ............