Question

levelling procedures and instruments, uses of levelling and booking

Answer 1

levelling is a art to determine the vertical distance of certain point or to fix the point at required height...,

Answer 2

The art of determining relative altitudes of points on the surface of earth or beneath the surface of earth is called levelling.It deals with the measurement of vertical planes only.Levelling is employed to provide an accurate network of heights, covering the entire area of the project.