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Thumb Wheel Resistance Box
TYPE: 7400-A
Thumb Wheel Resistance Box Type 7400-A is a resistance standard substitution instrument. It can be used as a source of resistance of a known accuracy of the order of + 1%. A known value of resistance (ranging from 1 ohm to 1 Megohm) can be drawn from the instrument and can be substituted in an electrical circuit or can be used for resistance simulation.
