Constantan Wire

For accurate determination of unknown resistance or comparison of resistance 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 10000) and four dials with decade resistance units, total resistance 11,1100). Coils of resistance wire, double silk covered, is wound noninductively. It is fitted with two enclosed tapping keys for battery and galvanometer. Accuracy ±O.1% of unit coils.