instrument for measuring electrical current
<instrument> An instrument for measuring the strength of electrodynamic currents. ... (03 Mar 1998) ... 
[n] - measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power
noun measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power
an instrument that uses the interaction between the magnetic fields produced by the currents in two coils or sets of coils to measure current, voltage, or power.