To measurement of self induction of a coil using Maxwell bridge. The kit contains a bridge with provision for connections of capacitors and an unknown inductor. In built ac supply [ 1KHz and 2Vpp ] and dc supply [ +5V ] on board. Two nos dial resistances [ 100ohm to 200ohm ] and [ 1ohm to 11ohm ] in step. A dc and ac null detector using selector switch. A dial type variable capacitor [ range 0.1µF to 1µF ] and eight nos. unknown inductors [ range 1 mH to 12 mH ].