Scientific American, Vol. 33, No. 15 (1875)
Scientific American volume 33, number 15, from 1875, a weekly American periodical of mechanics, invention and engineering aimed at general readers and tradesmen. The pictures are black-and-white wood engravings of machines and apparatus, shown in clean line with cross-hatched shadows and labelled parts. A designer could draw on their precise mechanical drawing style, with dense hatching for solid metal and open outlines for frames and rails.
