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 113
Fig. 71. smoothly and evenly, and the pitch should be adjusted to thesensitiveness of the bubbles. Most transits are fitted with a compass set in the up)ijer plate 102 PLANE SUEVEYINfl … y^-X m
Surveying
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