Scientific American, Vol. 62, No. 9 (1890)
Scientific American volume 62, number 9, published in New York in 1890, was a weekly periodical for a general readership of inventors, engineers and mechanics. Its pages show mechanical devices with engraved diagrams: a car coupling, a butter worker, a chlorination apparatus and a hoe-rake, drawn in precise line with numbered parts. A designer might borrow the crisp cutaway views, labelled call-outs and dense machine linework as a period technical style.
