A complete treatise on practical land-surveying, in seven parts; (1839)
Nesbit, A[nthony], 1778-1859. [from old catalog] · London, Longman, Orme, Browne, Green, and Longmans; [etc., etc.] · leaf 337
t is not necessary that the learner should drawthem so as to coincide in measure, with those of the examples which he isperforming. It will be sufficient for him to proceed in a similar manner. EXAMPLES. 1. From a trapezium, whose dimensions are contained in thefollowing notes, part off 2a. 2r.… … Having laid down the figure, draw the guess-line m n parallelto A B ; and from n, let fall the perpendicular a n ; then, sup-pose m n = 1058 links, a n will be = 230, and A a = 1052links; therefore, Ba = 1114 -1052 = 62 links,sq. links. Then, 1055x230 = 242650 the area of the trapezoid A a n m.…
Surveying
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