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 146
laid on the paper and its center placed at the station wherethe bearing is to be laid off. It is then turned till one of its cross-lines co-incides with some one of the lines on the paper, which represent east andwest lines, The long side of the protractor will then be on a meridian, andthe proper… … * This was demonstrated by Dr. Bowditch in No. 4 of The Analyst. 132 LAXD-SUR YEYIXG. 210. A common rectangular protractor without any cross-lines, or a semicircular one, can also be usedfor the same purpose. The parallellines on the paper (which, in thismethod, may be equidistant, as incommon…
Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
