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 89
l jilwiiys bu some discrepancy, but if the tiekl work hasboeu perfoniuil with reasonable euro the discreptuicy will notexceed two minutes for each angle. In this case divide it, in equalparts, among all the angles, adding or subtracting, as the case maybe, vmtil it amounts to less than one minute… … Fig. «). ones to be as shown in Fig. (JO. Next, by means of these correctedangles, correct the bearings also. Select some side, the longer the better, from two ends of whichthe bearing and the reverse bearing agree, thus showing that thebearing was probably not influenced by local attraction. Let…
Surveying
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