Scientific American, Vol. 34, No. 15 (1876)
This is a weekly American science and engineering periodical from 1876, Volume 34, Number 15, printed for a general readership of inventors, mechanics and manufacturers. Its pictures are black-and-white engraved technical drawings of machines and devices, with plan and elevation views, cutaway sections and labelled parts, which a designer could use as reference for mechanical linework and diagram conventions.
