Scientific American, Vol. 30, No. 26 (1874)
This is a weekly American science and engineering periodical, issue 26 of volume 30 from 1874, printed in New York for a general readership of inventors, mechanics and manufacturers. Its pictures are black-and-white line engravings of mechanical devices, geometric construction diagrams and machine tools, drawn with fine hatching and labelled letters and numbers, which a designer might use for technical linework, diagram layouts and vintage engineering texture.
