Standard and water-tight boxes for all electrical installation purposes
A 1908 trade catalogue from the H. Krantz Manufacturing Co. showing standard and water-tight outlet boxes sold to electrical contractors and installers. Halftone and line engravings give cutaway sections, hatched wall interiors, threaded hubs, cover plates and screw heads, with dense parallel-line shading useful as small mechanical spot art, pattern fills, or diagram vocabulary.
