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Title: automatic pneumatic shutter [Go to resource]
Description: Automatic pneumatic shutter with a lever below the lens to set against the required speed. The scale has 6 speeds 1 sec - 1/100 sec B. & T. c.1910 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: pneumatic shutter Temporal: c.1910 Source: Science Museum Identifier: 1979-559/2061 Go to resource More Like this...
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