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 35
ubber cloth, which is bent in a manner similar to that of the paper dish illustrated in Fig. 3. The rubber cloth is taken sufficiently large so as to project over the sides of the tray and permit bending to the outside, where it is fastened by means of thumb-tacks. Fig. 4 is a perspective view, and… … Fig. 4. Fig. 5. In Fig. 5, Q represents the sheet of paper to be sensitized. At the corners of the sheet, loops of threads are attached, through which thin, wooden sticks are slipped, so that the paper can be held by the sticks, and can be moved back and forth to the extreme ends, in the liquid,…
Photographic reproduction of plans, drawings, etc · Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial4621dodg-393-538.webp)
