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Scientific American, Vol. 67, No. 6 (August 1892) (1892)

leaf 13

An illustration from Scientific American, Vol. 67, No. 6 (August 1892), 1892, leaf 13
Ol'KD, OVAL, and SQCAKE HOLES. Mortl.lng Core Boxes, BIT V^r° BUILDERS OF ^r-tT ■etc. Invaluable to Carpenters, Cabinet and Pattern Makers. High- IYON & HEALY, ^HUB,SP0KE;'4 est Award. Send (8.00 for set (% to 11-8), In neat case, or We. lor !■■ 63 Monroe Street, Chicago, __ sample Bit. mailed free… … and varied. The matter crowded between the covers Manufacturers, Agriculturists. Chemists, Engineers, of this little 150 page volume cannot be obtained from Mechanics, Builders, men of leisure, and professional SPECIAL NOTICE! men, of all classes, need good books in the line of any other source.…

Munn · Patents · Inch · Feet · Canyon · Scientific American · Friction · Inch opening · Frictional resistance · Grand Canyon · Pound weight · Master car · Metallic ties · Bell crank · Horse power · Cubic feet

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