Marion and Co., author · London W. : Marion and Co., 22 and 23 Soho Square · leaf 124
112 PRACTICAL GUIDE TO PHOTOGRAPHY cal Guide to Photograpluj Mr. Cadett has invented a new shutter of most ingenious construction. We illus- trate it here. The principle on which it works is as … follows : The disc which is seen towards the top will, when a trigger is released by pressure on the pneumatic ball, revolve, performing a complete circle. As it revolves the pin which will be seen near its circum- ference works in the slot of a rectangular shutter, which it lifts and again lowers,…
Photography -- Handbooks, manuals, etc
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
