Scientific American, Vol. 27, No. 6 (1872)
Scientific American volume 27, number 6, from 1872, is a weekly American periodical of mechanical and scientific news aimed at inventors, engineers and general readers. Its pages are patent-style engraved line drawings of machines and devices, with lettered reference figures and cross-hatched cut-away sections. A designer can draw on the clean technical diagrams for their linear hatching, exploded views and labelled schematic layout.
