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 268
other proportion, by setting the twosockets to the number of the required proportion. The pencil-holder moves easily in the socket, to give way toany irregularity in the paper. There is a cup at the top forreceiving an additional weight, either to keep down the pencilto the paper, or to increase… … ^M; Part V.) LAND-SURVEYING. 237 If the original should be so large, that the instrument willnot extend over it at one operation, two or three points mustbe marked on the original, to correspond with the same uponthe copy. The fulcrum and copy may then be removed intosuch situations as to admit the…
Surveying
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