Scientific American, Vol. 24, No. 4 (1871)
Scientific American, volume 24, number 4 from 1871, a weekly American periodical of mechanical and scientific news for engineers, inventors and general readers. The pictures are wood-engraved mechanical drawings: a sectioned steam-engine cylinder, a magnetic compass demonstration with a wheel of spokes, a horizontal steam engine with a large flywheel, and a field tool with a toothed cutting wheel, all in fine hatched line. A designer might borrow their crisp hatching, cutaway views and dense technical diagramming style.
