Strange Device Lets You Communicate In Complete BLACKOUT!

This little antique item is actually a device to help people communicate during a complete communications and power outage. This device is part of a communications system that requires no batteries or external power source whatsoever. When there's nothing left but CB's and Ham radios, the signals of which can not only be intercepted, but triangulated and used to locate the source of the transmission, this device is a MUST HAVE!