Outdoor surveying is the process of measuring and mapping land and its features. Surveyors use tools like the theodolite and GPS to determine distances, angles, and elevations. This information helps in creating accurate maps and plans for construction, land development, and environmental studies. The data collected during outdoor surveying is essential for various projects, including road construction, building design, and land use planning. Surveyors often work in teams, collaborating with engineers and architects to ensure that the land is properly assessed and utilized according to regulations and safety standards.