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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 84
CM HEX. WASHER ^1 /^ ]e \J O/RAW TOP V/EW 82 e^/^^i /e TEETH … f^ATCH^T 3/SECT 45 ANGLE TO GET /6 TEETH 83Blueprints · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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