How to make pictures : easy lessons for the amateur photographer (1887)
Price, Henry Clay · New York : Scovill Manufacturing Co. · leaf 92
84 HOW TO MAKE PICTUR It is now desired to bring a fresh surface upon the exposing table for a new exposure ; with the right hand the operator rotates the key similar to the winding of a clock (see Fig. 7), which rotates the reel and carries the paper over the face of the exposing platform ; soon a… … made one complete revolution, informing the operator both by sound and sight that a fresh sensitive surface has been brought into place. With each click the metal points on the surface of the measuring guide roll puncture upward the paper at each margin, making four raised dots on each edge for…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
