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 36
g A B in m and n.With the centres m and n, and the same or any radius, exceed-ing half their distance, describe arcs intersecting each otherin r.—Draw the line C r ; and C D will be the perpendicularrequired. Note.—The last three problems may be easily performed by a square, ora plotting scale.… … From any scale of equal parts, (which is to be understood asemployed likewise in all the following problems,) lay off thebase A B. With the centre A, and radius A C, describe an arc. Withthe centre B, and radius B C, describe another arc, cutting theformer in C. Draw the lines A C and B C, and the…
Surveying
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