측량사, or surveyors, are professionals who measure and map land and its features. They use specialized tools and technology to determine distances, angles, and elevations, which are essential for construction, land development, and environmental studies. Their work ensures that buildings and infrastructure are built accurately and safely. Surveyors often collaborate with engineers, architects, and urban planners to provide critical data for projects. They may also be involved in legal matters, such as property disputes, by establishing land boundaries. Their expertise is vital for effective land use and planning in various fields, including civil engineering and real estate.