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 170
fPart IV. 235042 \ Double areas391792 / collected.2)626834 303417 4 .5366$ 40 21.46720 Area 3a. Or. 21p. 3. It is required to find the area of a field, from the follow-ing notes. Diag FB 660 Return to F. BE 970 L. off B. D B 268 L. off D. AD 832 R. off A. FA 285 L. off F. EF 0 384 40 300 53 200 32… … Haying constructed the figure, you will find the perpendi-culars Fa= 185, F m = 185, D n = 190, and D a = 216links. Triangle A B F. Trapezium B D E F 850 base. 185 )190/Per 185 per. 4250 375 sum. 6800 970 diag. 850 26250 157250 3375 363750 L 2 148 LAND-SURVEYING (Part IV. Triangle BCD,475 base.216…
Surveying
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