Scientific American, Vol. 62, No. 22 (1890)
A weekly American science and engineering periodical from 1890, volume 62, number 22, published in New York for inventors, mechanics and general technical readers. Its pages carry patent-era mechanical devices, trade notices and advertisements, printed as black-and-white wood engravings. The pictures are precise line drawings of machines, tools and office equipment, with clear hatching, cutaway sections and labelled parts that a designer could use as references for mechanical detail and period typography.
