Scientific American, Vol. 24, No. 24 (1871)
A weekly American science and engineering periodical from 1871, aimed at inventors, mechanics and general readers, presenting patents and machines through engraved line drawings. The pictures show mechanical devices drawn in precise cross-hatched engraving, including a multi-figure apparatus with spools or cylinders, a finger-worn metal hook, and a small steam engine on a boiler pedestal, useful to designers seeking clear mechanical diagrams and engraved hatching.
