Magic Forums

Hmm, i've heard all my magickal life about pendulums, but what EXACTLY are they used for? as heard by a comment on a thread of the same title, a pendulum can be used to speak to one's guardian angel. Does this mean the pendulum resides not in black magick but as a neutral tool? I've also ead that once created a pendulum has its own spirit or entity which gives the pendulum its power, or does the power come from our own energy and influences? If so then pendulums are useless arn't they? If we don't know where to find an object, how would our energy know? (I'm sorry for so many questions) but finally, how can one communicate with their guardian angel with a pendulum? Or any spirit for that matter? (It'll be troubling to answer all of these questions, I apologize in advance.)