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Leveling

Topographic instructions of the United States geological survey 2E1-2E5

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Abstract

Geodetic leveling by the U.S. Geological Survey provides a framework of accurate elevations for topographic mapping. Elevations are referred to the Sea Level Datum of 1929. Lines of leveling may be run either with automatic or with precise spirit levels, by either the center-wire or the three-wire method. For future use, the surveys are monumented with bench marks, using standard metal tablets or other marking devices. The elevations are adjusted by least squares or other suitable method and are published in lists of control.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Unnumbered Series
Title:
Leveling
Series title:
Topographic instructions of the United States geological survey
Series number:
2E1-2E5
Year Published:
1966
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Washington, DC
Description:
viii, 63 p.
Additional Online Files(Y/N):
N