Sometimes you need to know which side of a magnet is the north pole and which is the south pole, for instance if you’re using it with a sensor that’s only sensitive to one pole or the other. Emovendo’s Magnetic Pole Searcher/Finder will quickly indicate which pole is which.
The tool consists of an alnico bar magnet mounted on gimbals so it can move freely in all directions. You simply move the probe toward the magnet, and the green tip points to the north pole and the red tip points to the south pole.
You’ll pay $9 for Emovendo’s Pole Finder, plus $8 shipping.
Magnetic Pole Finder [Emovendo]