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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 121

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(189) By transversals. Let AB be the required distance. Seta stake, C, in the line prolonged;set another stake, D, so that C andB can be seen from it; and a thirdstake, E, in the line of BD pro-longed, and at a distance from Dequal to the distance from D to B.Set a fourth stake, F, at the…

Surveying

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