A treatise on surveying, comprising the theory and the practice ; (1887)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, 1840- [from old catalog] ed · New York, D. Appleton and company · leaf 134
<$ S 120 LAND-SURVEYING. 189. To change Bearings. It is convenient in certain calcula-tions to suppose one of the lines of a survey to change its di-rection so as to become due north and south ; that is, to be-come a new meridian line. It is, then, necessary to determinewhat the bearings of the…
Surveying
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