creens Indastrial Publishers, Booksellers, and Importers, .'"''■' 11 '■ JIGS&STAMP BATTERIES ^^'■h.'.'MILLINGiMININCMMHINERYw^-^ jjjxperinieiital Syieqce. 81 O Walnut St.. Philadelphia, l*a„ V. S. A. ,> * HARRINGTON & KING PERFORATING® .CHICAGO. I^Ournew and Revised Catalogue of Practical and… … 3 " " " 1.00 closing spring nut. tions per minute, and capable of reducing the tempera* By Geo. M. Hopkins. and remit to 4 " spring " 1.25 Micrometer Cali- tureof 90s above to 50° below zero. With five figures, 5 " " " 1.25 MUNN & CO., Publishers, showing plan and side elevation of the apparatus,…
Munn · Device · Patents · Scientific American · Oil · American chemical · Shooting star · Shooting stars · Illustration represents · Sewing machine · Express money · Machine thread · Pressing iron · Scikntific american
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