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 108
F OBSTACLES TO MEASUREMENT IN CHAIN-SURYEYING. 93 Let A B be the distance re- Fig. 116. … 147. By Symmetrical Triangles,quired. Measure from A obliquelyto some point 0 past the obstacle.Measure onward, in the same line,till C D is as long as A C. Placestakes at 0 and D. From B meas-ure to C, and from 0 measure on-ward, in the same line, till C E isequal to OB. Measure E D, andit will be…
Surveying
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