
1) Measuring instrument 2) Meter
Found on
https://www.crosswordclues.com/clue/electrometer

An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical handmade mechanical instruments to high-precision electronic devices. Modern electrometers based on vacuum tube or solid-state technology can be used to make voltage and charge measur...
Found on
http://en.wikipedia.org/wiki/Electrometer

instrument for measuring electrical potential
Found on
http://phrontistery.info/e.html

• (n.) An instrument for measuring the quantity or intensity of electricity; also, sometimes, and less properly, applied to an instrument which indicates the presence of electricity (usually called an electroscope).
Found on
http://thinkexist.com/dictionary/meaning/electrometer/

instrument designed to measure very small voltages and currents. The quadrant, Lindermann, Hoffman, and Wulf electrometers measure electrical ... [1 related articles]
Found on
http://www.britannica.com/eb/a-z/e/19

instrument intended to detect or measure a voltage, absorbing negligible energy
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=313-01-04

apparatus for the measurement of small electric charges or currents
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=394-23-02
E`lec·trom'e·ter noun [
Electro- +
-meter : confer French
électromètre .]
(Physics) An instrument for measuring the quantity or intensity of electricity; also, sometimes, and less properly, applied to an instrument which indicates the presence of electricity (usually cal...
Found on
http://www.encyclo.co.uk/webster/E/19

[
n] - meter to measure electrostatic voltage differences
Found on
http://www.webdictionary.co.uk/definition.php?query=electrometer
noun meter to measure electrostatic voltage differences; draws no current from the source
Found on
https://www.encyclo.co.uk/local/20974

a calibrated device used for measuring extremely low voltages.
Found on
https://www.infoplease.com/dictionary/electrometer
No exact match found.