Original industrial trade vintage catalog for AUTOMATIC TEMPERATURE CONTROL. COMPANY, INC. Main office and factory was located at 32 East Logan Street, Philadelphia, PA. Manufacturers of Valve, Relay, Motor Operated Controllers, Time Cycle Contactors. Regulating Valves for liquids & gases and Motomerco Three-Position Relays. Disbound from a large 1931 industrial catalog, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro industrial equipment library. Slight damp stain on outer edge.