Analysis of paint vehicles, japans and varnishes
A 1920 New York technical manual by Clifford Dyer Holley, published by Wiley for chemists and paint analysts, covering laboratory methods for testing paint vehicles, japans and varnishes. The four pictures are line drawings of apparatus: a filter funnel on a flask, a pipette in a conical flask, a sealed glass flask with a side arm and graduated scale, and a boxed heating apparatus with a tube and stand. A designer might take from them a sparse, technical diagram style, with thin black linework, dimension callouts and labelled measurements on a warm grey ground.
