Original laboratory trade vintage catalog for THE BRISTOL COMPANY. Main office and plant was located in Waterbury, CT. Manufacturers of Bristols Indicating, Recording and Controlling Instruments. Pressure and Vacuum Gauges. Liquid Level Gauges. Recording and Controlling Thermometers. Long Distance Transmitting and Receiving System. Instruments. Unbound from a large 1931 engineering catalog, this unique old three page technical specifications brochure would exhibit beautifully matted and framed. A fantastic addition to your retro industrial instrument collection.