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. It is used in determining the location of a lot or getting its distance. There are several equipment used in surveying such as dumpy levels, tape measure tripods, etc.
Below is a video how surveying is performed.
maganda ung gawa, madaming picture at may video pa :)
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