Original electrical trade vintage catalog for FENWAL, INC.  Main office and plant was located in Ashland, MA.

Manufacturers of Thermoswitches, for complete temperature control. Products include cartridge, flange head, block head, hex head, coupling head, air, immersion, submersion, all purpose, high temperature, aircrafe engine, and detect-a-fire thermoswitches. Has numerous product images with detailed descriptions, uses, applications, dimensions and specifications data charts provided. Unbound from a large wartime 1945 engineering designer catalog, this unique old eight page technical brochure would display beautifully matted and framed. Nice cover graphics. A fantastic addition to your vintage electrical control library.