Abney, William de Wiveleslie, Sir, 1843-1920 · London, Longmans, Green · leaf 237
2i8 Apparatus, The Jont^ dry-plate camera is represented by the follow- ing diagram : — Fig. 65. … After the folded-up camera has been fixed to the stand, c can be opened by opening the hook a, and unfastening a button. The front of the camera is pushed forward to the approximate focus of the lens, and is clamped by a button. To focus, the door d is opened and the ground glass is put in position…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
