Surveying

• Surveying refers to the method of making measurements of the relative positions of natural and man-made features available on the earth's surface and provides this information on maps or plans. 

• Plans and Maps are the graphical representations of the structures and data present on the earth's surface on the horizontal plane. 

• The map is drawn to some suitable scale. It shows the natural features of a country, such as towns, villages, roads, railways, rivers, etc.

• Maps may also include details of different engineering works, such as roads, railways, irrigation, canals, etc. 

• A Plan is a large-scale representation whereas Map is a small-scale representation.