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A treatise on land-surveying; comprising the theory developed from five elementary principles; and the practice with the chain alone, the compass, the transit, the theodolite, the plane table, &c. Illustrated by four hundred engravings, and a magnetic chart (1875)

Gillespie, W. M. (William Mitchell), 1816-1868 · New York, D. Appleton · leaf 279

An illustration from A treatise on land-surveying; comprising the theory developed from five elementary principles; and the practice with the chain alone, the compass, the transit, the theodolite, the plane table, &c. Illustrated by four hundred engravings, and a magnetic chart, 1875, leaf 279
ABO, one side and all the angles are given to find AOand BO. In the triangle BCO, BO and all the angles are given tofind BC and CO; and so with the rest. Another proof of theaccuracy of the work will be given by the calculation of the lengthof the side AO in the last triangle, agreeing with its… … PART v.] TRIVXGULAR SURVEYIXG. 273

Surveying

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