Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 53
Fig. 28. … 46 ELEMENTS OF SURVEYING. [BOOK IL If, for any reason, the pin can not bedriven into the ground, the end of thechain length should be marked by drivingthe pin olliquelyy always at right angles tothe chain; if this cannot be done, a crossshould be scratched on the ground at theexact point, and the…
Surveying
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