"Places transistor into actual operation. Operates upon contact. Clear speaker tone, no visual observations to make. Tests transistors in or out of the circuit - Prices - Model 85 Tester, (including battery and plug-in extender cable) $17.45. Production Devices 7857 Raytheon Rd., San Diego, Ca. 92111 - Patent Pending"
AD1440001 - Transistor Tester - Production Devices, San Diego, Ca.
Good condition, slight lower right corner wear, unused, light foxing on back
Vintage, Collectibles, Old Postcards, Post Card Collecting, Deltiology, Transistor Tester, Production Devices, San Diego, California
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