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 123
rection, as AC, and measure onward, inthe same direction, till CD = AC. Takeany point E in the line of A and B.Measure from E to C, and onward in thesame line, till CF = CE. Then find bvtrial a pomt G, which shall be at thesame time in the line of C and B, and in Gthe line of D and F. Measure the… … CHAP, v.] Obstacles to Measurement. 117 (197) Otherwise: Prolong BA to Fig. I3i. some point C. Range out any con-venient line CA, and measure CA = ^CA. The triangle CAB, is now to bereproduced in a symmetrical triangle,Bituated on the accessible ground, bFor this object, take, on AC, some pointD,…
Surveying
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
