Assertion: oscilloscope's voltage | /r/CapableOf | use separate leads
Facets:
value: to carry the measuring current
type: PURPOSE
Source sentences:
text: When sensitive measurements must be made (e.g., very low voltages, or very low or very high resistances) shields, guards, and techniques such as four-terminal Kelvin sensing (using separate leads to carry the measuring current and to sense the voltage) are used.