Detect the slightest vibrations build your own Geophone for approximately $50.00 with this step by step instructional video !!! Find Most the parts at your local RADIO SHACK store!! A great addition to any Ghost Hunters paranormal equipment arsenal.
BGMICRO Gheophone kit :
Thanks go out to Steve Lojik Lujan for the beat over at : http://cloudedmoonproductions.com/