Sturtevant fuel econmizers and air heaters.
A 1911 trade catalogue issued by the B. F. Sturtevant Company, a firm of heating and ventilating engineers, presenting its fuel economizers and air heaters for boiler plants and furnaces. The pictures are plain black-and-white photographs and engraved views of cast-iron and steel tube assemblies, with lettered parts such as D and E shown separately, offering a designer clear mechanical forms for industrial diagrams and hardware motifs.
