GB/T 3927-2008 is an important standard in the field of DC potentiometers. It clearly defines the type, basic parameters and structure of potentiometers. Measurement accuracy, Stability and other key performance indicators are strictly standardized, and manufacturing process requirements are clarified, covering material selection, assembly standards, etc. Test and inspection rules are elaborated to ensure product mass. At the same time, product labels, Encasement and other details are standardized to provide a unified technical basis for the production, mass control, sales and use of DC potentiometers, and help to achieve accurate DC potentiometer measurement.