Fry, Horace Pugh. [from old catalog] · Philadelphia [The John C. Winston co.] · leaf 55
tute,December, 1864. 2. Manufacturers have deviated slightly from these propor-tions, owing to the materials used in their manufacture not beingcommercial sizes. 3. When drawing bolts and nuts, take dimensions from tableon Plate Q and use the method shown on Plate P for approxi-mating the curves…
Mechanical drawing
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