Surveying is defined as taking a general view of, by observation and measurement determining the boundaries, size, position, quantity, condition, value etc. of land, estates, building, farms mines etc. and finally presenting the survey data in a suitable form. This covers the work of the valuation surveyor, the quantity surveyor, the building surveyor, the mining surveyor and so forth, as well as the land surveyor. • Another school of thought define surveying as the act of making measurement of the relative position of natural and manmade features on earths surface and the presentation of this information either graphically or numerically.