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 99
rather than not to have enough. \ T (132) Exceptional cases. The preceding arrangement of lines,though in most cases the best, may sometimes be varied with ad-vantage. Unless the farm surveyed be of a shape nearly as broadas long, the two diagonals will cross each other obliquely, insteadof nearly… … iys. 80. In a case hke that in Fig.80, five lines will be betterthan six, and -vNill tie one an-other together, then* points ofintersection being carefullynoted.
Surveying
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