Specification for direct-current and low-frequency electronic measuring instruments with a digital display|Voltage measurement, Marking, Electronic equipment and components, Accuracy, Electric power systems, Digits, Environmental testing, Electrical equipment, Signal devices, Direct current, Electrical measuring instruments, Impact testing, Classification systems, Electrical measurement, Electric power system disturbances, Test equipment, Testing conditions, Magnetic field strength, Circuits, Symbols, Error analysis, Electric terminals, Voltmeters, Ammeters, Alternating current, Thermal testing, Impulse-voltage tests, Working range, Vibration testing, Electrical testing, Performance, Electric connectors, Display devices, Response time, Overload (electric), Current measurement