A catalogue of physical instruments
A 1912 trade catalogue of physical instruments, issued for laboratory and school buyers, with plates of apparatus drawn in fine engraved line. The four pictures show a geared pulley stand and tubing on the first, a brass-mounted bracket on coiled cylinders, a graduated balance with a scale pan, and a glass fountain and tube labelled Knott Boston. Designers can take the precise hatched shading and mechanical detail as a model for technical line illustration.
