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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 358

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 358
62.35 acres, and the distance CL = 27.81 chains,as ill the example in that article. (537) Next suppose that the trian-gle ABC is to be divided into threeequivalent parts by lines starting froma point D, within the triangle, given bythe rectangular co-ordinates AE andand ED. Let ED be one of the…

Surveying

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