The Desco Digital Static Field Meter indicates surface voltage and polarity on objects. The meter can measure ranges of 0 to ±1.999 kV or 0 to ±19.99 kV at a distance of 1 inch with an accuracy of ±5% of the displayed value. The automatic zero button allows adjustment to zero with no screws or dials to turn. The hold button allows the user to “freeze” a displayed measurement for evaluation.