Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 106
t and little value, or as a means of checking the bearings as taken bythe theodolite or transit. Forcing should not be attempted with the latter in-struments. If the survey does not balance almost exactly, it should be resur- PLOTTING. 89 veyed; otherwise it could not be used in a court of… … Dep. 627 Dep. 408 Fig. 195. by compass, except as the angles are taken to minutes and seconds. The latitudesand departures are to be taken by logarithmic sines and cosines; if these arenot obtainable, the table for natural sines and cosines in the appendix will giveminutes, and seconds can be…
Mechanical drawing
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