y their use that certain fastened by the set-screws, a' a'. These set-screws large photographic plants are enabled to hang up BY GEORGE! J. JUNES. fit into slots in the outer flange of the casing, and a The marvelous development of the blue-print has signs reading something like this: "Blue-prints… … the manufacture of CROSS-SECTION OF BLUE-PRINTING MACHINE these blue-prints has A BLUE-PRINT MAKING MACHINE. developed into a vast in- in position, takes up much of the vibration of the dustry. So formidable has the business grown, that Probably the most complete of these machines is tool when…
Munn · Motor · Gas · Scientific American · Automatic · Gas engine · Foot passengers · Horse power · Printing press · Years ago · Motive power · Shot bit · Slot machines · American supplement
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