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 117
etimes happens, that the mere or wood is of a triangular form ;in this case, the work may be very readily done, by measuring the threesides of a triangle, taking insets as before. After which construct the tri-angle, and from the opposite angle let fall a perpendicular upon the base,and proceed as… … Having fixed four mark?. A. B. C. and D. forming a reefc- angle; begir_ at A. and measure the line A B, taking the ne-cessary insets, and entering them in your field-book. In Qiesame manner proceed with the : tha three a irs; and you inllfind noted the following di-rr--nans. AD 11 : : ■ :■•-»…
Surveying
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