JO415型直流安培計(jì)適用于中學(xué)、中專等學(xué)校實(shí)驗(yàn)室，可測(cè)微弱電勢(shì)用。

Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.