FIELD: measurement technology. SUBSTANCE: holder has a casing made in the form of a detachable joint of two parts, cover 2 and base 1, the base having a profile identical to that of side edge 4, brush holder 5 of electric machine, and being attachable to the electric machine, the upper part of base 1 has limiting bosses, the thickness of which is no more than that of side edge 4 of brush holder 5; cover 2 and base 1 are grooved so as to form channels 3 for sensors, which make possible reciprocation of sensors in horizontal and vertical planes and are provided with a mechanism for pressing the sensors against the channel walls. EFFECT: enlarged operating capabilities. 5 dwg
