The 2D and 3D measurement of points, distances and angles of features and objects on the Earth’s surface. See also Surveying Instrumentation topic. This topic covers the science and techniques that govern the 2D and 3D measurement of points, distances and angles of natural and man-made features and objects on the Earth’s surface. These measurements are acquired for a wide range of practical applications in construction, engineering, land use planning, mapmaking and cadastral projects, See also Surveying Instrumentation topic for the various tools employed to acquire survey measurements.