👉 A sounding is a method of measuring the elevation, depth, or position of a point on the surface of the Earth. It involves using a series of small vertical lines to mark the distance between two points on the ground and then to measure the height at each line location. This technique can be used for both topographical surveys and surveying purposes. Sounding is an important tool in surveying, as it provides a direct measurement of elevation or depth from which other measurements can be made. It is
