MAPPING THE EARTH'S SURFACE Part 1

Description

Traces the steps involved in cartography from surveying to production of the map. Uses demonstrations of traditional as well as modern techniques including radio wave transmission, triangulation, sighting beacons on helicopters and towers, a computerized fifth wheel for vertical measurements, airplane photography, stereoscopically adjoining photographs, map tracing, computerized mapping, coloring by plate, flat mapping, and relief mapping. Emphasizes the fact that the earth's surface is continually changing. Subjects include the establishment of the control framework, the use of stereoscopic pairs of aerial photographs, and the final compilation of the map.

Collection

Records of the U.S. Geological Survey

Series

Motion Picture Films Relating to Topography and Mapping