This standard is applicable to DC potentiometers with an accuracy level of 0.0001~0.1[1×10^(-6)~1×10^(-3) (Scientific notation)], and is applicable to the above-mentioned potentiometers. Included auxiliary equipment. This standard does not apply to automatic or semi-automatic potentiometers, nor to those potentiometers that obtain part of the indicated value by means of the zero meter scale, nor to those used with potentiometers. External auxiliary equipment.