A treatise on surveying and navigation: uniting the theoretical, practical, and educational features of these subjects (1857)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst; Toledo, Anderson, Burr, & co. · leaf 154
the line that may be seen from another base. The intersections of the lines from the extremities of any base toto the same object will locate the object. When all the objects are thus located, both to the right and tothe left, we pass on to new objects, taking care to keep at least twoof the old… … 152 SURVEYING. paper, and if the paper on the table is not large enough, it must betaken off and new paper put on, and two of the objects on the oldpaper must appear on the new, and then these two papers can beput together so that the objects which are on both papers will coin-cide, and then the…
Surveying · Navigation
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