Beans, E. W. [from old catalog] · Philadelphia, J. W. Moore · leaf 92
ample embracing a number ofthose cases, which occur in practice, so as to ex-hibit the application of the rules which have beengiven. Let us suppose it be required to survey a tractof land ABCDEA with a transit and commontwo pole chain. Place the instrument, by means of a plummet,exactly over the… … so as to bring the needle to the north and southpoints of the compass box, clamp the lower plate tothe staff head, unclamp the vernier plate and bringthe telescope to bear on a staff set at B, the secondstation; the course may be read from either the ver-nier or needle, or both, which is…
Surveying
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