It is simple to measure very high currents (hundreds of amperes) with the appropriate current transformer.

Fifteen years earlier, her husband and his brother had invented the electrometer, a device for measuring extremely low electrical currents.

But it is practically impossible to position instruments fast enough to measure currents that may come and go in a matter of hours.

The thermo-galvanometer is an instrument for measuring small electric currents.

Chattock used it to measure magnetic fields rather than currents.

To measure larger currents, a resistor called a shunt is placed in parallel with the meter.

They are equipped with sensors that measure ocean temperature and currents.

This allows the meter to measure large currents.

During this exploratory voyage, Roosevelt recorded depths and measured currents for later reference.

Instruments attached to the capsule measured water temperature, currents, and pressure.