Scientific American, Vol. 27, No. 18 (November 1872)
A weekly American technology and patent journal, Scientific American, issued in New York in November 1872 for inventors, manufacturers, and mechanics. The wood engravings show machine parts in numbered figures — vertical boilers, lathe tool-rests in section, patent clamps and hand tools, plus advertising cuts with display lettering — usable as hatched line art for machinery details, cutaways, and period type-and-image combinations.
