Program Details: A Land Surveyor measures and records property boundaries and the topography of the land covered by construction and engineering projects. This measurement and the recorded data are called a “survey.” Surveys are used to establish legal boundaries, prepare maps and exhibits, and are the basis for written descriptions of land tracts that satisfy legal requirements. Without surveyors, railroads and highways could not be built, large buildings could not be erected, and homeowners could not put up fences around their yards, for fear of trespassing on someone else's land. Surveyors work to set land values, subdivide land into lots, and stake development sites. Surveyors use mathematical reasoning ability to visualize objects, measure distances, sizes, and other abstract forms. They must be precise and accurate in their work because mistakes can be costly.