The Proteus magnet is a newly developed MR sensor which may be immersed in a fluid to be measured. The Proteus magnet is a dipole magnet fabricated from low cost commercial N52 disc magnets. The magnet is the size of a pocket watch. T1, T2, and D measurements are facile.
T1-T2 and T2-D measurements are illustrated with measurement of solutions of various composition. A modified Proteus magnet permits velocity profile determination of newtonian and non-newtonian tube flows.