Original industrial trade vintage catalog for PRODUCTION INSTRUMENT COMPANY, was located at 706-12 West Jackson Blvd, Chicago, IL. Manufacturers of electric counters, timing recording devices and actuating switches. Pictured are monitor, wizard, mercury and clipper high speed coil winding counters. Disbound from a large 1948 industrial construction materials book, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro industrial electric equipment library.