Vintage Heathkit IT-121 FET / Transistor Tester

Heathkit It-121 Transistor FET Tester - *For Parts or Repair Only*

VINTAGE Heathkit Transistor Checker Kit Model IT-18 Tester With Box /Tested

Capacitor Checker Std Reference Capacitors

Vtg HeathKit Model IT-3120 FET/Transistor Tester Replacement (Gauge Only) NOS

VINTAGE KNIGHT KIT Transistor and Diode Checker

Heathkit Daystrom Model IT-10 Transistor-Diode Checker Unmodified Vintage

Radio Shack Micronta 22-024 Transistor Checker - Vintage - Made in Japan