Original laboratory trade vintage catalog for MOREY & JONES, LTD, main office was located 922 South Hemlock Street, Los Angeles, CA. Manufacturers of MJL Flow Indicators, Manometers, Regulators, Duplex Control Valve Units. Liquid Level Indicators, Automatic Combustion and Damper Controls for oil, gas and stoker fired industrial and heating boilers. Unbound from a large 1931 engineering 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.