I saw this on another board and thought it'd be a lot of fun if you tried it and posted your results, this way we can test this test's accuracy (which some claim is 100%) accurate.
(Pasted from anothet board):
For those of you who don't know how it works, you simply make a pendulum, some sort of thin line with a slightly heavier weight at the bottom. Hair/Wedding ring, thread/large paperclip, small plumbers bob. For pregnant women, hold the pendulum over their belly while their in a comforable seated position. The pendulum will start to move, usually in circles. It will start to move in a straight line - either across the belly (girl) or up and down (head-to-toe direction - boy). Wait until the pendulum comes to a complete stop... never know, there might be more than one baby in there! Over the wrist usually works for the full pregnancy history. Please note this can be uncomfortable for folks who have had miscarriage, because they can show up...
OK, I am assuming most of you know what you are having through ultrasounds, so please post u/s results and pendulum results. Thanks!
Here are mine:
u/s: girl pendulum: boy