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 48
See Ficr. 31. The graduation at ten is taken as thezero in determining thousandths. The vernier in question is firmlyattached to the upper end of the rod Ci^s feet, (and the extension ofthe rod runs through this vernier). The differences in graduationof the two sides should be carefully noted. The… … 36 PLANE SUEVEYING desired, to set the target at (ii feet and run the rod to its hill length,then move down as signalled; where no target reading is required.run the rod to its full extent (^12 feet) and as the face of the rod hasa scale throughout, the reading can be taken from the instrument.…
Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
