Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.
JO415型直
安培计适用
中学、中专等学
室，可测微弱
势用。
Model JO415 DC microammeter is suitable for students to measure weak current and slimelectric potenial in laboratory of middle school and polytechnic school.
JO415型直安培计适用中学、中专等学室，可测微弱势用。
AC Milliammeter, Model J0414, is suitable for the laboratories of middle schools and polytechnic schools to measure current intensity in the AC circuit.
J0414型交毫安表适用中学、中专等室测量交路中的
度。
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