A treatise on surveying, comprising the theory and the practice ; (1887)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, 1840- [from old catalog] ed · New York, D. Appleton and company · leaf 67
s perpendicular by the basewill be found to give the same content. Ex. 2. The three sides of a triangular field are respectively 89*39, 54*08,and 45*98. Required its content. Ans. 100 A. 0 R. 10 P. A four-sided field; as Fig. 55. Eield-worh Measure the four sides. Measure also a diagonal, as A… … scale. On each side of it construct a triangle with the sides of the field, asdirected above. To prove the accuracy of the work, measure on the plat the length of the proof-line, BD, and if itFig. 55. agrees with the length of the same C line measured on the ground, thefield-work and platting are…
Surveying
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