Original 1943 electrical trade vintage ad for STRUTHERS-DUNN, INC.  Main office and plant was located at 1321 Arch Street, Philadelphia, PA.

Manufacturers of Relays.

Contact Pressure Lifts 15 Times the Relays' Weight! Dunco's Little Giant of the Relay Field.

Ordinary relays weighing, say, one pound, may give a contact pressure of 3 or 4 ounces. By comparison, the Struthers-Dunn Series 61 DC Relays give 7 pounds contact pressure in a unit weighing only 7 ounces. Moreover, these famous Dunco "Nutcrackers" are especially designed to withstand shocks and vibrations, and to operate faithfully without an enclosure in dirty or dusty places.

Unbound from a 1943 electrical engineering magazine, this unique old one-page advertisement would display beautifully matted and framed. Nice graphics. World War 2 propaganda. A fabulous addition to your retro electrical library.