Lutron 822-A Fully Digital EMF Meter (Wide Range, High Resolution)

Rugged, Compact, & Lightweight Magnetic Field Meter

Couldn’t be easier to use, just turn it on and get accurate reliable readings. Perfect for situations needing high resolution measurements of AC magnetic fields without spending a lot of money. Large LCD display reads 0.1 -199.9 mG over the ELF range of 30 – 400 Hz. Provides readout in both mG and microTesla. Calibrated to within 4%