Scientific American, Vol. 31, No. 15 (1874)
Scientific American, volume 31 number 15 from 1874, a weekly American periodical of mechanical and scientific news aimed at inventors, engineers and workshop readers. The pictures are fine-line wood engravings of machines with figure-lettered parts, including a boot-lasting machine, a gear-driven clamping device, a tilting furnace and a rotary fixture, so a designer can borrow their mechanical drawing style, labelling and cutaway views.
