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 127
triangles. Take any convenient point,asC. Set stakes at two other Fig. 140. points, T) and D,in the same ^~ ^^ Une, and at equal distancesfrom C. Take a point E, inthe line of AD; measure fromit to C, and onward till CE= CE. Take a pomt F inthe line of BD ; measure fromit to C, and onward till CF… … (206) Otherwise: Takeany convenient point, as C,and set off equal distances pon each side of it, in thelmeofCA,toDandD. Setoff the same distances fromC, in the line of CB, to E andE. Through C, set out aparallel to DE, or DE, andset stakes at the points Fand F where this parallelintersects AE and…
Surveying
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