Scientific American, Vol. 45, No. 2 (1881)
A weekly American science and invention periodical from 1881, aimed at general readers and engineers, presenting new mechanical devices through engraved line drawings with lettered parts and captions. The pictures show a laboratory balance under a glass case, a patented hand-wheel machine, a feed-water regulator with sectional views, and a wagon spring mechanism, offering a designer examples of dense, labelled period engineering diagrams with strong outlines and cross-hatched shading.
