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Establishment of Calibration Base Lines
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1977
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Description:The calibration of electronic distance measuring instruments involves the determination or verification of instrument constants and the assurance that the measured distances meet accuracy specifications. Although it is not necessary to utilize a measured distance to determine or verify instrument constants, the verification effort is reduced when an accurately measured distance can be used. However, to assure that an instrument is measuring properly, a known distance of high accuracy or, preferably, a sequence of distances forming a calibration range or base line is required. Experience shows that a base line consisting of four on-line monuments spaced at intervals of 150 m, 400 to 430 m, and 1,000 to 1,400 m will meet the needs of the users. Specifications and recommendations on the establishment of calibration base lines are described in some detail.
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Content Notes:Revised by: Paul R. Spofford (1982); Dennis A. Wegenast (1983)
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Rights Information:Public Domain
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Compliance:Library
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