Analysis of paint vehicles, japans and varnishes
A 1920 American technical manual by chemist Clifford Dyer Holley, published in New York and London for paint, japanning and varnish analysts. Its pictures are plain line drawings of laboratory glassware, such as a distilling flask with a thermometer and side arm, a funnel set over a conical flask, a pipette dipping into a flask, and a round-bottomed flask with a fitted column. A designer might take their clean, diagrammatic style for simple scientific figures with measurement labels and dimension lines.
