Scientific American, Vol. 5, No. 28 (1850)
Scientific American, volume 5, number 28 from 1850, a weekly American periodical of technical news and patent notices aimed at mechanics, inventors and manufacturers. The pictures are wood-engraved mechanical diagrams with lettered parts and figure captions; one shows a cylindrical steam-jacketed apparatus with a sectioned view beside the exterior, the other a geared hand-cranked machine with a perspective view and detail parts. A designer could draw on their clean line hatching, labelled callouts and numbered figure layout for technical diagrams.
