| 摘要 |
A photographic easel that will allow the exposure of four equal sized photographic images on one sheet of any of the standard sizes of photographic sheet material. These exposures are made in rapid succession without moving the easel or without composing the photographic image between each exposure. The unique principle is based on a mathamatical relationship between the width of the photographic sheet material and the adjustable width of the working area. An adjustable bar allows for the use of various sizes of photographic sheet material.
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