Original industrial trade vintage catalog for PITTSBURGH GEAR & MACHINE COMPANY, was located at 2701 Smallman Street, Pittsburgh, PA. Manufacturers of Fabroil and Textolite Motor Pinions, Speed Reducers, Hardened Steel Bushings, Sprockets for Roller and Silent Chains. Disbound from a large 1931 industrial catalog, this unique old one page technical brochure would display beautifully matted and framed. A marvelous addition to your retro industrial equipment library. Slight damp stain on outer edge.