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 254
the ruler from 9 to D; more it parallel to E; and markthe temporary line at T. Draw the line D T; and D T 7, 4, will be the trapeziumrequired; hence the area of the irregular figure may be foundby multiplying the diagonal D 7, by half the sum of the twoperpendiculars T m and 4 n. Part V.)… … Lay the ruler from A to C ; move it parallel to B ; and markthe temporary line K G, at 1. Lay the ruler from 1 to D ; move it parallel to C ; and markthe temporary line at 2. Lay the ruler from 2 to E ; move it parallel to D ; and markthe temporary line at 3. Draw a line from E to 3 (L); and the…
Surveying
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