The Magnetic Field Compensation MR3 system is a proven solution for magnetic field noises in the frequency range from DC to 1,000Hz. Typical applications are noise reduction in electron microscopy, electron and ion beam experiments, magnetic resonance imaging (MRI), biomagnetic investigations, SQUID operation and paleomagnetic research. The magnetic field is measured with a low noise triaxial fluxgate. Fit perfectly to most SEM series offered by various manufactures, like Carl Zeiss, Joel, Hitachi, FEI and Tescan.