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 451
B A, and setoff its length, to the desired scale, on the line just drawn, from bto a point a, representing A. Then sight to 0, draw an indefiniteline by the ruler, and on it set off the length of B C from b to c.Fix the needle at c. Set up at C, the point c being over this sta-tion, and make the… … table have one, will facilitate this. Then sight forward from C toD, and fix CD, ccl on the plat, as Ic was fixed. Set up at D,make dc coincide with DC, and proceed as before. The figureshows the lines drawn at each successive station. The table drawnat A shows how the survey might be commenced…
Surveying
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