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 192
thediagonal C D; these will enableyou to construct the trapezium B CED. The lines B C and D E, pro-duced, will evidently meet at A. Measure the line B A with thesame scale, by which you have con-structed the trapezium, and it willbe the distance required. Note.—This method may be well appliedto… … 170 LAND-SURVEYING. (Part IF. PROBLEM VII. TO ERECT A PERPENDICULAR BY THE CHAIN,OR TO MEASURE LINES UPON WHICH THEREARE IMPEDIMENTS. EXAMPLE. Suppose C D E F to representthe base of a building, throughwhich it is necessary a line shouldpass to an object at B, seen fromA. Measure from A to m ; and…
Surveying
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