Trace magnetic fields instantly!
Curious about magnetic field? Try the Magnetic Field Probe to trace magnetic fields and demonstrate a magnetic field's 3-D nature. The unit has a tiny, sensitive, color-coded bar magnet. The magnet is situated on a rotatable bearing which is mounted on three axes, allowing it to pivot.
The probe measures 4" x 1" 1 1/2" and comes with a carrying pouch.