Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 221
tire territory should be made for the purposeof selecting a base line and proper points for stations; thisexamination should be more or less elaborate according to thenature and extent of the survey. The proper distribution and combination of the triangles, soas to adapt them to the survey in hand,… … SEC. I.] MAKING THE SrKYEY. 215 very important part of the preliminary operations. The selec-tion should be so made that each point may command a view ofthe greatest practicable number of surrounding trigonometricalpoint objects, and that each angle at the point shall be as near asmay be 60°. A…
Surveying
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