Multimeter Ratings and Accuracy
Is the grade and accuracy of a multimeter the same thing? When calculating the maximum relative error, you only know how to calculate the precision?
The level of accuracy of the measurement data, called the "precision level", expressed as a percentage of plus or minus error.
For example, a level of 2.5 means its error rate is 2.5%. The multimeter's various gears often have different accuracy levels. For example, the DC gear and the ohm gear are soil 1.5, and the AC gear may be soil 3.0, which is marked on the dial of the watch.
