(under the class definition) Subject matter for measuring the strength of the vector force field set up in the vicinity of nonmoving electrical charges.
(1) Note. The instruments used for measuring an electrostatic field are called electrometers and this subclass is the generic location for such instruments.
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72, for testing potential in a specific environment using electrometers wherein the environment is a significant factor in the measurement.
109, for electrostatic attraction or repulsion measurement of electricity, per se.
