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 137
o on. The intermediate spacescan thus be graduated. It miist not be forgotten that in usingthe rod til us gra<luated, the quantity/+ must be added to tlu»distance indicated by the rod, to reduce the distance to the centerof the instrument. If till rod is to be graduated to give distances from… … to the distances given by the rod; but Iqr every point other thanthat for which the rod is graduated, the distance will be in errorby some fractional part oi f-\- r. The reason for this will heapparent by referring to Fig. !S7. If the distanci is less thanthat for^vhicli the rod was graduated, the…
Surveying
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