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Scientific American

April 1, 1948

1 min read

Silent Mercury Switch, Cotton Fiber Analyzer, and more

New model features large capacity and long service life

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This article was originally published with the title “Silent Mercury Switch, Cotton Fiber Analyzer, and more” in Scientific American Magazine Vol. 178 No. 4 (April 1948), p. 180
doi:10.1038/scientificamerican0448-180

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