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A treatise on gear wheels (1904)
Grant, George B. (George Barnard), 1849-1917 · Boston, Grant gear works, incorporated · leaf 38
4 teeth Limitinp- Involute Teeth. 35 10.17 teeth … 3 X 10.17 Unequal teeth Fig. 50Gearing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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