Scientific American, Vol. 24, No. 25 (1871)
A weekly American periodical of 1871, the Scientific American, issued in New York for a readership of inventors, engineers and mechanics, carrying technical news and patent-office illustrations. The pictures are plain black-and-white wood engravings of machines with labelled figures, showing mechanisms in cutaway, side elevation and close detail. A designer could draw on their clear linework, rigid geometric construction and hatched shading for industrial or vintage technical diagrams.
