Transcontinental Traverse

The USC&GS developed unique specifications for this work that resulted in one part in 1,000,000, exceeding Air Force requirements.

[2] The Geodimeter electronic distance measurement device was rapidly tested and adopted by U.S. national agencies for long-distance mapping.

[8][9] The instruments were located atop Bilby towers many meters above ground level to avoid obscuring objects and to get a smoother air temperature profile for accuracy.

[10] Photographic satellite triangulation stations were tied in to the traverse at Moses Lake, Washington; Chandler, Minnesota; Beltsville, Maryland; and four other locations.

[11][12] This article incorporates public domain material from The High-precision Transcontinental Traverse: Improving the Scale of the U.S. Survey Network.

Map of the Transcontinental Traverse
Two complete Bilby towers on Transcontinental Traverse
NOAA map of the world showing satellite triangulation stations in Maryland and Washington State