The system for automatical compensation of the earth magnetic field and for low magnetic field reproduction

Free space unshielded large volume reproducing system of the low permanent magnetic field(MF) is necessary for calibration of the magnetometers. measurement of the MF of the different technical products, materials. testing the ecological and medical effects, etc. Particularly, the described outfit was used for the gyromagnetic ratio of the proton determination[1] as a earth magnetic field(EMF) compensation system.