Topographical drawing and sketching : including applications of photography (1888)
Reed, Henry A. (Henry Albert), 1844-1930 author · New York : John Wiley & Sons, 15 Astor Place · leaf 246
of the image of any prominent object, cut by the mid- dle vertical of the ground-glass, was taken, and a description of the point was recorded either verbally or by a rough sketch (see Fig. 20), sufficiently intelligible to be recog- nized in the developed negative. Since this vertical extended… … Fig. 20. Fig. 21. matically checked in its revolutions, for the different fields in succession ; or, a hori zontal limb might be added and the arc of revolution measured by it, thus requiring but one bearing for a set of views from any station. A judicious use of the hand-compass may frequently…
Topographical drawing · Photographic surveying
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
