Assertion: voltmeter | /r/CapableOf | allow to measure the difference
Facets:
value: between two points of a circuit
type: OTHER
value: in electrical potential
type: OTHER
value: safely
type: MANNER
Source sentences:
text: Voltmeters allow to safely measure the voltage or the difference in electrical potential between two points of a circuit, and at the same time they do not change the voltage of that circuit.