Elements of surveying and levelling; with descriptions of the instruments and the necessary tables (1870)
Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes & Company · leaf 85
re any conve-nient distances BB and CE, suchthat the points B, B, and A, shallbe in the same right line, as also, the points E, C, and A ; then meas- d / ^.-^^-^ \ sure the diagonal lines BC and BB. o*^ ^^ Kow, in the triangle BBC, the three sides are known, there-fore, the angle BCB can be found.… … SEC. L] MEASUREMENTS. 83 ill the triangle ^i^6, we have two angles and the included side,to fxud the side JBA. POURTH METHOD. 40. Let AC be the distancerequired. Lay off the right angleCAB, and measure AB, any con-venient distance. At B lay off theright angle CBI), and fix the pointD, carefully, in…
Surveying
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