The American journal of the medical sciences
This 1827 American medical periodical, issued from Thorofare, New Jersey, and aimed at physicians and medical students, carries engraved diagrams of apparatus and wiring. The pictures are plain line drawings: a wall-mounted frame with strung wires and a hanging loop, rows of lens-like elliptical shapes on a rod, a slotted board with cords and bobs, and a dark oval set between numbered wire rows. A designer might take their clean, schematic linework and numbered labelling as a model for technical diagrams.
