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 390
ed feet for the distances, and ten feet for the heights. In practice, engraved profile-paper is generally used, which isruled in squares or rectangles, to which any arbitrary values maybe assigned. When the line leveled over is not straight, the profile, whoselength is that of the line straightened… … of it. In the note-book they are put on the right-hand page.They may be taken at the same time with the other levels, or inde- 376 LEVELING. pendently. In taking cross-levels where the slopes are quite steep,as in mountain districts, frequent settings of the instrument arenecessary. A much more…
Surveying
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