Original electrical trade vintage catalog for SIGNAL ENGINEERING & MANUFACTURING COMPANY, was located at 154 West 14th Street, New York City, NY.

Manufacturers of Wheelock Apparatus fire alarm systems, call systems, signals, relays. Master code, general alarm, presignal alarm, break glass stations, equipment, single stroke and vibrating bells and duo potential apparatus.

Disbound from a large 1936 electrical construction materials book, this unique old sixteen page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library. Nice cover graphics. Pages are loose and contains a small amount of residual glue on edge.