Pre-NGS Survey Data Sheets—Now with Images!
Harold Nelson of MaineDOT has sent along old horizontal control datasheets from Hancock County, Maine—they contain diagrams!
Tag archive for: diagrams
Maine Geodetic Survey Stations, 1933-1935
From Harold Nelson of MaineDOT comes a survey report and station descriptions from a 1930s survey of Maine.
Maintenance of Airway Beacon Facilities: 1962 Manual
Learn about the characteristics, operation and maintenance of airway beacon facilities, from the early acetylene-powered beacons to the familiar Crouse-Hinds DCB-36 beacons!
NGS Historical Geodetic Control Diagrams Available
Historical geodetic control diagrams and indexes, which were once available on an FTP site hosted by NGS, are now available here.