Two contour lines, having the same elevation

The fundamental principle of surveying is to work from the

Imaginary line passing through points having equal magnetic isogonic line declination is termed as

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

A 15 cm theodolite means

Handles of chains are made up of

Which among the following EDM instruments is having more range?

The rise and fall method for obtaining the reduced levels of points provides a check on

Determining the difference in elevation between two points on the surface of the earth is known as,