Useful Useless Fact: Use a Wristwatch as a Compass

Todays Tip: Hold a watch with the 12 o’clock at the leftmost part of your hand. Move your arm so that the hour hand points at the sun. The spot halfway between the hour hand and the 12 is south. [via 08.06 Wired magazine]
As always, you can see all the previous tips and read the disclaimers here.
