Surveying or land surveying is the technique profession, and science of determining the terrestrial or three dimensional position of points and the distances and angles between them. A land surveying professional is called land surveyor. These points are usually on the surface of Ru earth and thing are often use to establish land maps and boundaries for ownership , locations like building corners or the surface location of surface features or other purposes required b government and civil law such as property sales. Surveyors works with elements of geometry ,trigonometry, regression, analysis, physics, engineering, metrology, programming languages and the law. They use equipment’s like total stations, robotic total stations, Gps receivers, retroreflectors, 3D scanners, radios, handheld tablets, digital levels, sub surface locators, drones, GIS and surveying software. Surveying has been an element in the development of the human environment since the beginning of recorded history . The planning and execution of most forms of constructions required it . It is also used in transport , communications, mapping and the definition of legal boundaries for land ownership. It is an important tool for research in many more scientific disciplines