FIELD: measurement technology. SUBSTANCE: method of determination of componentes of vector of magnetic induction includes linear conversion of measured field by three mutually perpendicular directions with specified conversion factor of which at least one is not equal in value to two other, orientation of converter to matching one of directions of conversion with direction of determined component of vector of magnetic induction and other direction of conversion with plane in which first direction of conversion and vector of magnetic induction are located, determination of values of moduli of vector of magnetic induction of conveter and measured fields with subsequent determination of components of magnetic induction. For increase of precision direction of vector of magnetic induction of summary magnetic field is determined before orientation of converter, additional magnetic field opposite to this direction is formed and its value is changed till fulfilment of condition 
, where 
is modulus of vector of magnetic induction of converted summary field; T is modulus of vector of magnetic induction of geomagnetic field; P1 is conversion factor equal to two others. EFFECT: improved authenticity of method.
