Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 51
e tagged with white cloth to enable thesurveyor to find them again readily, when they have been left tomark a point. 70. To Measure a Horizontal Line.—The point wherethe measurement is to begin is located by a staff temporarilyplaced for the purpose, or by some one of the many permanentmarks by… … Fig. 26. Fio. 27. SEC. I.] MEASUREMENT OF DISTANCES. 45 a hind-chainman, or follower. The more careful and expert ofthe two should be the follower. The leader, with the marking-pins and one handle of thechain in his right hand, starts off on the line, drawing out thechain to its full length. Both…
Surveying
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