Editor's note: The Meter Reader is a regular column in TLE, originated by the Gravity and Magnetics Committee and currently coordinated by John Peirce, that seeks to highlight new ideas in geophysical fields besides seismic—particularly gravity, magnetics, and electromagnetics. If you have a short contribution on these topics that is written in the relatively informal but informative style of TLE, please submit it to Dean Clark, editor of TLE in Tulsa, or to John Peirce, at GEDCO in Calgary. This article describes a new class of small EM sensors that have successfully overcome one of the inherent limitations that many...

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