Elements of surveying and levelling; with descriptions of the instruments and the necessary tables (1870)
Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes & Company · leaf 108
nda true delineation ofthe boundarv. In the case represented in ■^ ■ ^ the figure, the streamfrom A to C is theboundary. The sta-tion B is selected forconvenience, as it isevident, if the line were run direct from A to 6, the labor oftaking the offsets would be much greater. It will be observed… … 106 ELEMENTS OF SURVEYING. [BOOK II. 60. When the honnd-ary is a crooked streamthat is easily crossed, itis often conyenient tosurvey a line across thebend, as in the figure,and locate by offsetsupon both sides of theline. In any case, thesmall areas to be com-j)uted are only trape-zoids and…
Surveying
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