Post Office Box, SIX Dial

ECONOMICAL MODEL With two ratio dials of 1, 10,100 and 1000 ohms each and a resistance arm of four dials, each of ten coils of 1, 10, 100 and 1000 ohms, giving total resistance of 11,110 ohms, with 4 mm socket terminals for battery, galvanometer and unknown resistance. l We use imported manganin wire for two ratio dials. l Resistance arm of four dials is fitted with high stability carbon metal film resistance of one watt, 1%. l Galvanometer is included. Accuracy ±1% to ±2%.