A treatise on surveying ; in which the theory and practice are fully explained (1860)
Alsop, Samuel · Philadelphia, E. C. & J. Biddle & co. · leaf 180
and D fromwhich A and some other point Bin AB may be seen, and measureCD. Then take the angles ACD,BCD, ADC, and BDC. The dis-tance AC and the angle CABmay be calculated. Run CE, making ACE = CAB : CE will then be parallelto AB. Now, if we suppose AE to be drawn, we shallhave in the triangle ACE… … Problem 3.—From a given point out of a line, to run aline making a given angle with that line, 296. Where the line is accessible. If the compass is used. Take the bearing of the givenline. Then place the compass at the given point, andset it to same bearing. Deflect the compass the number ofdegrees…
Surveying
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