Scientific American, Vol. 24, No. 2 (1871)
Scientific American, volume 24, number 2, published in New York in 1871, is a weekly periodical of mechanical and scientific news for an American readership of inventors, engineers and tradesmen. Its engraved pages show working machines in cutaway and exploded views with lettered parts keyed to the text, including a shot-dividing device, a valve with a rotating wheel, a hand drill and a brick-making machine. A designer could draw on the crisp hatched shading, the labelled cross-sections and the rigid mechanical geometry of these diagrams.
