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 111
int F be taken in the middle of A D, then A B =AC X DECE-DE The minus signs must be interpreted as in Art. 121. 157. By Harmonic Division. Set stakes, C and D, on each sideof A, and so that the three are in thesame straight line. Set a third stakeat any point, E, of the line A B. Seta fourth, F, at… … Fig. 127. 158. To an Inaccessible Line. The shortest distance, C D, froma given point, C, to an inaccessiblestraight line A B, is required. FromC let fall a perpendicular to A B, bythe method of Art 119. Then set astake at any point, E, on the line A C ;set a second, F, at the intersection ofE B…
Surveying
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