<p>Original 1943 electrical trade vintage ad for<b><span style="font-size: 14px;"> STRUTHERS-DUNN, INC. </span></b>Main office and plant was located at 1321 Arch Street, Philadelphia, PA.</p><p> Manufacturers of Relays. Relay-Timer Specialists.</p><p>Dunco Memory Relays. Mechanical Latch-in, Electrical Reset.</p><p>A Dunco Mechanical Latch-in, Electrical Reset never forgets!</p><p>Energizing the lower coil closes the armature which is automatically latched in place until it is re-opened by energizing the upper coil. Thus, the contact remembers unfailingly which coil was last energized, and remains in position until it is released by energizing the other coil.</p><p>Products include model 5HXX, 5AXA (large series 5) and 51BXX (midget series 51), are all featured.</p><p>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.<br></p>
- SKU zl534
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