| JO403高中演示電表為指針或內磁結構，及測量線路等部分所組成，共有十四個測量檔位，使用方便，性能穩定，安全可靠，供學生教學演示實驗中作檢流計測量微量直流電流及直流電壓，直流電阻等演示項目. The model JO402 is comprised of inner magnetic structure and measuring Circuit It has such excellence as esily for usage ,stabriitym safety, and visual for demonstration.It provides14measuring ranges and may serve as galvanometer or measuring instrument of DCA DCV ACA and ACV ? |
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