You searched for: “electrometer tube
electrometer tube
1. A component in an electrometer that has a high input impedance and a low control-electrode conductance, facilitating the measurement of extremely low direct current or voltage.
2. A high-vacuum electron tube having a high input impedance (low control-electrode conductance) to facilitate the measurement of extremely small direct currents or voltages.
This entry is located in the following unit: electro-, electr-, electri- (page 45)