Scientific American, Vol. 34, No. 26 (1876)
This is a weekly American science and engineering periodical from 1876, published in New York for a general readership of inventors, mechanics and engineers. Its pictures are precise black-and-white line engravings of apparatus with lettered reference figures, showing cutaway boxes, pipes, lenses, a rotating cylinder and a tripod stand with glass vessels; a designer could take the clean technical diagram style and its labelled callouts as a model for instructional line art.
