Scientific American, Vol. 24, No. 9 (1871)
Scientific American, volume 24, number 9, a weekly American periodical of 1871 devoted to mechanics, inventions and science, printed for a general technical readership. Its pages carry wood-engraved technical diagrams of machines and household furniture, including an extension table and the Allen steam boiler. Designers can take from them the clean, hatched line work and the precise mechanical drawing conventions of the period, showing parts in cutaway and exploded views.
