Sensitive Galvanometer, Model J0409, is suitable for the laboratories of middle schools and polytechnic schools to measure small electric current and electric potential difference.
J0409型灵敏电流计适用于中学、中专等实验室测量直流电路中微小电流和微小电势差。
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Commonly used has the galvanometer, the amperemeter, a volt idea, the electric bridge, the potential difference counts and so on.