electron vacuum gage

electron vacuum gage

[i′lek‚trän ′vak·yüm ‚gāj]
(engineering)
An instrument used to measure vacuum by the ionization effect that an electron flow (from an incandescent filament to a charged grid) has on gas molecules.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.