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Practical problems in mechanical drawing and blueprint reading (1921)

Sturtevant, Walter W. [from old catalog] · Minneapolis, Minn. : Practical problems co. · leaf 49

An illustration from Practical problems in mechanical drawing and blueprint reading, 1921, leaf 49
FLY WHEEL 47 … WEIGHT 48

Blueprints · Mechanical drawing

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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