Surveying ; a manual of practical instruction in the art of plane surveying, including plotting, leveling, triangulation, line running, cross-sectioning, traversing, and other details of field work (1910)
American School of Correspondence, Phillips, Alfred Edward, 1863- [from old catalog] · Chicago, American school of correspondence · leaf 130
ion, istowards the second station of the traverse line. The instrument is then placed over the second station, and thevernier set at the back azimrith of the first station. The azimuthof any line from the second station will now correspond with itsbearing as before. The readings of the needle are… … 118 PLANE SUEVEYmd 15. Ou placing tlie iiistrumeat at B, lit tlie vernier be set at254 15, a sight taken on A, and the lowt^r plate clamped. Theazimuth of BC will be 143° 02, the vernier being set at 323° 02on arriving at C. Tlie limb is x>laeed in the iwoper position bysighting back to B. The…
Surveying
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