Scientific American, Vol. 33, No. 8 (1875)
A weekly American periodical of 1875 that reported on new inventions, machines and scientific apparatus for a general readership of engineers, mechanics and inventors. The pictures are black-and-white wood engravings of machines and devices, showing mechanical detail with fine parallel hatching and clean outlines, which a designer could take as a model for technical line illustration with clear labelling.
