Levels with Automatic Instruments

by Elmer F. Kulp, Chief; Control Section, U.S. Late Survey, Corps of Engineers, Detroit, MI,

Serial Information: Journal of the Surveying and Mapping Division, 1970, Vol. 96, Issue 2, Pg. 121-135

Document Type: Journal Paper

Abstract: As a method of obtaining an increase in accuracy for vertical control, the U.S. Lake Survey has adopted the use of the Zeiss Ni 2 self-leveling level equipped with plane-parallel plate micrometer for high precision leveling. The theory of the plane-parallel plate micrometer is described as well as equipment used, personnel requirements, data collection methods and allowable closures. Personnel adapted to the new methods rapidly and results and accuracy obtained are very favorable.

Subject Headings: Plates | Lakes | Geomatic surveys | Leveling | Equipment and machinery | Data collection | Automation |

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