Original industrial trade vintage catalog for BOSTON GEAR WORKS SALES COMPANY. Main office and factory was located in North Quincy, MA. Manufacturers of Chain Drives, Gears Speed Reducers and Light Transmission Parts. Disbound from a large 1931 industrial catalog, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro industrial equipment library. Slight damp stain on outer edge.