Handheld Digital Gauss/Tesla Meter WT10A - 2000mT Magnetic Field Tester with Data Hold, Peak Value, Auto Zero, mT/Gs Switch for Permanent Magnets, Motors, Speakers (Portable & Lightweight)

Devonian Tesla Tester Gauss Meter Surface Magnetic Field Tester

CMS Magnetics - Magnetic Pole Detector, a Handy Polarity Identifier to Determine Magnet's North or South Poles, Great for School Teachers, Science Projects, and Metal Detector

Green Magnetic Viewing Film 4x6 | Cool Magnets Science Kit | Magnetic Field Detector & Visual Aid for Physics Education | Ideal for Research & Magnetism Demonstrations