The latest state-of-art GPS (Global Positioning System) equipment at our company are the devices that process the signals they receive from the satellites at certain orbits and rather very accurately calculate the present position. These systems can also provide the elevation data, velocity (if we are in motion), the distance to a pre-determined point and other similar information, in addition to the coordinates of the present location. At the field surveys conducted to examine a point on satellite image or to obtain the coordinates of the data entered to GIS database, GPS equipment are utilized to accurately locate the place of the relevant point.