Sammlung electrischer Spielwerke für junge Electriker
A late eighteenth-century German collection of electrical toys and experiments, compiled by Georg Heinrich Seiferheld in 1791 and published by Monath and Kussler for young electricians. Its copperplate pages show engraved apparatus diagrams with lettered parts, numbered figures, and labelled cross-sections, giving a designer a clear vocabulary of Enlightenment-era mechanical drawing, with leyden jars, pulley-like frames, and small wooden game boards arranged in tidy technical layouts.
