Noun
Kelvin bridge (plural Kelvin bridges)
(physics) A specialized form of a Wheatstone bridge network designed to eliminate the effect of lead and contact resistance and thus permit accurate measurement of low resistances.
Modifications of the fundamental bridge Kelvin bridge The Wheatstone bridge is the fundamental bridge, but there are other modifications that can be made to measure various kinds of resistances when the fundamental Wheatstone bridge is not suitable. Source: Internet