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 62
arter of an acre,has been measured between two of the parallel hues on thepaper (since 10 square chains make one acre); and thatone of the smaller divisions measures ojiejjerch betweenthe same parallels. Four of the larger divisions giveone acre. The scale is generally made long enough tomeasure at…
Surveying
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