Model 7905 Digital Static Meter
The Digital Static Meter is a sensitive and responsive product that indicates surface voltage and polarity on objects up to ±20 kV from one inch (25mm) away. After zeroing the meter, move it to within one inch of your problem surface(s) for a LED illuminated reading of the static voltage. It includes a National Institute of Standards and Technology certification for accuracy, and will help discern the most troublesome static areas in any process.