File:Oscillograph Time-Index Generator.png

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	06:52, 5 July 2008		2,451 × 2,136 (843 KB)	DMahalko	=== Illustration Description === Figure 2620 - Time-index marking generator for use with Duddell moving-coil oscillograph, consisting of a large rotating light-shutter wheel and a mirror moved by a cam, to draw marker lines on moving film as the shutter w

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