Vintage SENCORE TF151 In or Out of Circuit FET / Transistor Field Effect Tester
Item: Model TF151 In or Out of Circuit FET / Transistor Field Effect Tester w Ref Guide. THE BETA - Gm KNOB IS HARD TO TURN SO I DID NOT TRY TO FORCE IT (All Other Knobs & Dials Operate Fine). SEE PHOTOS FOR COMPLETE DETAILS.