Post Office Box, Wheatstone Bridge

For accurate determition of unknown resistances or comparison of resistances of two or more conductors. Decade dial type, with 6 dials (two dials having 4 ratio arms – one fraction and others in multiple of 1, 10, 100 and 1000O) and four dials with decade resistance units, total resistance 11,110O) . Coils of resistance wire, double silk covered, is wound non-inductively. It is fitted with two enclosed tapping keys for battery and galvanometer. Accuracy ±0.1% of unit coils. Coils of Manganin Wire, more accurate