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Scientific American

August 6, 1910

1 min read

How to Make a Serviceable Gear-Wheel, Chambering Out a Hole

By John A. Bergstrom

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This article was originally published with the title “How to Make a Serviceable Gear-Wheel, Chambering Out a Hole” in Scientific American Magazine Vol. 103 No. 6 (August 1910), p. 109
doi:10.1038/scientificamerican08061910-109a

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