Geodetic measurements are techniques used to determine the precise positions of points on the Earth's surface. These measurements help in mapping and understanding the Earth's shape, size, and gravitational field. By using tools like GPS and theodolites, surveyors can collect data that is crucial for construction, navigation, and land development. These measurements are essential for various applications, including cartography, civil engineering, and environmental monitoring. They allow scientists and engineers to create accurate maps and models, which are vital for planning infrastructure and studying changes in the Earth's surface over time.