REED Instruments Electromagnetic Field Meter GU-3001 - The Home Depot
GLTL Gaussmeter Tesla Meter Surface Magnetic Field Tester with N/S Function + Metal Probe: Amazon.com: Industrial & Scientific
Amazon.com: Permanent Magnet Gauss Meter Tesla Meter Fluxmeter with 5% Accuracy Probe 0 to 2400mT : Industrial & Scientific
T91 Gauss EMF ELF Meter Detector Electromagnetic Field mG – Gain Express
3-Axis Backlight Gaussmeter – Less EMF
Digital Tesla Meter Gauss Meter Tester Magnetic Field Measuring Instrument With 2% 2 Percent Accuracy High Sensitivity Low Drift Metal Probe - Amazon.com