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Scientific American

April 1, 1975

1 min read

The Amateur Scientist, April 1975

An amateur undertakes the ultimate in mechanical precision, a ruling engine

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More by C. L. Stong

This article was originally published with the title “The Amateur Scientist” in Scientific American Magazine Vol. 232 No. 4 (April 1975), p. 134
doi:10.1038/scientificamerican0475-134

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