A treatise on surveying ; in which the theory and practice are fully explained (1860)
Alsop, Samuel · Philadelphia, E. C. & J. Biddle & co. · leaf 252
DCF, by means of which theline EF may be found. The angles at all the points of the triangle should bemeasured. The sum of these should be 180°. If it differsbut little, a few seconds, from this, the error should be dis-tributed among the angles, giving one-third to each. If,however, a greater… … 250 TRIANGULAR SURVEYING. [Chap. VI. of 3, and C of 2: T2_ = i of the error should be applied toA, r8o to B, and ^ to C. 372. Base of Verification. In order to prove the cor-rectness of the observations and calculations, some part ofthe work as distant as possible from the base should be con-nected…
Surveying
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