This standard establis es the methods and means for verification by the comparis n method of multimeters from 1st to 5th class, intended for the measurement of current and voltage, both alternating and direct, as well as for the measurement of resis ance, except for those with electronic operation.
NC 90-15-35-1987 history
1987NC 90-15-35-1987 Metrological Assurance. 1. to 5. Class Working Voltmeters. Methods and Means of Verification