Inside Out Library · Explore

Modern heliographic processes : a manual of instruction in the art of reproducing drawings, engravings, manuscripts, etc., by the action of light : for the use of engineers, architects, draughtsmen, artists, and scientists (1888)

Lietze, Ernst · New York : Van Nostrand · leaf 45

An illustration from Modern heliographic processes : a manual of instruction in the art of reproducing drawings, engravings, manuscripts, etc., by the action of light : for the use of engineers, architects, draughtsmen, artists, and scientists, 1888, leaf 45
porous woolen cloth. The hose H con- Figs. 29 and 32. nects the space, be- tween the rubber cover F and the glass plate, with an air-pump, which is shown in detail in Figs. 30 and 31, and which is fastened to the frame K, and also serves as a handle for the frame. (See Figs. 25 and 29.) After the… … Fig. 30. Fiq. 31. paratus of this kind, of large size, in elevation. In small sizes, the cross-pieces q q, in the frame of the rubber cover, are not necessary. The printing frame is conveniently supported by a rolling stand, shown in Figs. 25 to 28. It will be noticed that this stand rests upon…

Photographic reproduction of plans, drawings, etc · Photography

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

More pictures from Modern heliographic processes : a manual of instruction in the art of reproducing drawings, engravings, manuscripts, etc., by the action of light : for the use of engineers, architects, draughtsmen, artists, and scientists

More like this