Marion and Co., compiler · London : Marion and Co. · leaf 117
INSTANTANEOUS SHUTTERS. 109 We here illustrate 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 coiled spring in the centre, two catches, and with Cadett's pneumatic ap- paratus. Five minutes'…
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