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 84
latting scale is placed parallel to the line, with its zero-point opposite to the beginning of the line. The offset scale isslid along the platting scale, till its edge comes to a distance onthe latter at which an offset had been taken, the length of which ismarked off with a needle-point from the… … will be greatly facilitated. The points thus obtained are joined bystraight lines, and a miniature copy of the curved line is thus ob-tained ; all the operations of the platting being merely repetitionsof the measurements made on the ground. If no offset scale is at hand, make one of a strip of…
Surveying
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