Marion and Co., compiler · London : Marion and Co. · leaf 117
ustrate Cadett's patent pneumatic view shutter. This shutter fills all these requirements, for it will give exposures from the one-hundredth part of a second to any longer period of time without limit, and these results are obtained by the simplest of means ; — a revolving ebonite disc, worked by a… … pneumatic apparatus, is a very serviceable one, and per- mits an adjustment for various times of exposure, but not to such a full extent as Cadett's view illustrated above. It is simple, light, and easily adjusted.
