An electrometer is sort of a multimeter but with an insanely high input impedance, in the order of 10¹²Ω (1TΩ). My Princeton 136 can measure voltage up to 199.9V, small currents, high resistance and ...

Detects single and multiple elementary charges with Angstrom-scale spatial precision and ~60 ns temporal resolution. Uses inversion-symmetric SnV centres in diamond for high sensitivity and low linear ...