AC/DC Gaussmeter Magnetic Field Strength Meter Teslameter Magnetometer Residual Permanent Magnet N/S Polarity 3000mT (30000 Gauss) Automatic Manual Data Recording

AC/DC Gaussmeter Magnetic Field Strength Meter Teslameter Magnetometer Residual Permanent Magnet N/S Polarity 3000mT (30000 Gauss) Automatic Manual Data Recording

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

4 x 4 Inch Magnetic Field Viewing Film, Magnetic Field Viewer, Magnetic Flux Display, Magnet Pattern Detector, See Magnetic Field for Scientific Project (6 * 4 Inch)