What is the accuracy of a class 2.5 volt meter?

A Class 2.5 voltmeter typically has an accuracy of ±2.5% of the full-scale reading. This means that if the meter is measuring a voltage at the upper limit of its range, the actual voltage could vary by 2.5% above or below the indicated value. Accuracy can vary by manufacturer and specific model, so it's always best to consult the product specifications for precise details.