Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 121
soundings have been made, the position and depth of soundings shouldbe given; but when work is to be done by contract, characteristics, unless wellestablished, should not be definitely marked. Since it would be in general impossible to express the variations of the sur-face of the ground in the… … feet to the inch, the vertical scale would be 40 or 20 feet to the inch. For thepurpose of facilitating the plotting of profiles, profile-paper can be obtainedfrom stationers, on which are printed horizontal and vertical lines. In the plotting of sections across the line which are extended but…
Mechanical drawing
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