Dowsing in a cemetery can supposedly identify suspected, unmarked graves. Just like those in search of water, I believe it works somehow based on the presence of water? Someone help!
Plumb-lines use the carpenters' tool of a plumb-line, but the device is held over a grave (or a pregnant lady's stomach). If I remember correctly, the pendulum will swing in a circular motion if the grave or the belly holds a female subject; or it will swing back and forth if the test case is male. I actually had the plumb-line used on me during my pregnancy (by Russian in-laws) before I had even met Mr. Brennan. The line was correct. I had a baby girl -- in the days when you found out your offspring's sex after the delivery. I suppose it works if you want it to work??? The faith of the believer??
Here's one dower's instructions on how to dowse and how it possibly works:
http://www.tommymarkham.com/gravedowsing.htm
