Supplementary notes on E&C covered under further resources
In these days, digital multimeter helps in measuring the resistance in a simple way. But the advantage of Wheatstone bridge over this is to provide the measurement of very low values of resistance in the range of milli-ohms.
The Wheatstone bridge is the interconnection of four resistances forming a bridge. The bridge is used for finding the value of an unknown resistance connected with two known resistor, one variable resistor and a galvanometer.