Original industrial trade vintage catalog for WATTS REGULATOR COMPANY, 240 Lowell Street, Lawrence, MA. Manufacturers of Pressure Regulator, Valves, Pump Governors, Damper Regulators and U-Tube Heat Interchanger. Unbound from a large 1931 industrial catalog, this unique old one page technical brochure would exhibit beautifully matted and framed. A fantastic addition to your retro industrial equipment collection. Slight damp stain on outer edge.