SURVEY
By definition, s urveying is the science of gathering, determining, recording and measuring the relative size of human made and natural features on the earth`s surface. Surveying is the science of measuring and record distances, angles and heights on the Earth’s surface to obtain data from which accurate plans and maps are made. Surveying is also the art and science of making or taking measurements both linear and angular on the earth’s surface at different positions for the purpose of producing a plan or map. In other definition; surveying (land surveying) is a science of measuring and recording distances, angles and height on earth’s surface to obtain data by which accurate plans and maps of parts of surface of the earth are made Angular measurement means measuring the distance from a given reference point to an observed object. The distance is measured in a clockwise direction from North. Linear measurement is the distance measured along the surface of the ground