Scientific American, Vol. 24, No. 12 (1871)
Scientific American, volume 24, number 12, is a weekly American periodical of 1871 that reports on inventions and mechanical advances for a general readership of engineers, tradesmen and home inventors. Its engraved pages show a copying-paper letter book, railway car springs, a high chair and an adjustable wrench, giving designers plain mechanical drawings of household and industrial objects.
