Russian M328 Transistor Tester DIY LCR Diode Capacitance ESR voltage meter PWM Square wave Frequency Signal Generator
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M328 Diode Triode Capacitor Resistor Transistor Tester ESR Meter Multi-Function Tester with Test Board Electrician Tools - Newegg.com
M328 transistor tester - EasyEDA open source hardware lab
Treedix GM328 Transistor Tester Frequency Tester PWM Square Wave LCR Meter Voltmeter Full Color Screen Graphics DIY Kit with Acrylic Case - Walmart.com