Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 54
e held directly over theproper point. . When the raised end of the chain is only two, or even threefeet above the ground, it will suffice, in many cases, to use amarking-pin, held lightly by the point, between the thumb andfinger, instead of a plumb-line. When the chaining is on a steepinclination,… … Fio. 30 to within such a distance of the follower, that when the chain isdrawn out to that length horizontally, it shall not be too high tobe held conyeniently. The follower holds his end of the chain carefully over thepoint or station, by means of the plumb-line, while he directs theleader in the…
Surveying
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
