SUPERIOR INSTRUMENT COMPANY MODEL TV-11 VACUUM TUBE TESTERThis unit is designed to test your radio / tv vacuum tubes and is a simple emission tester for quick culling out of bad tubes.It will test: 4,5,6,7 pin large base; 8 pin octals; 7 & 9 pin miniatures; 8 pin micro; 7 pin inline tubes.Of special interest is the ability to test the very oldest of tubes with 2 digit numbers like 19, 20, 57, etc.It will test most audio amplifier tubes especially: 5U4, 6AQ5, 6CL6, 6L6, 6SN7, 6V6, 12SN7, 12AX7 + more.Comes with a copy of the operations manual and several supplemental charts. Roller runs free.Used, tested, guaranteed fully working. Checked with my test 6SN7 and works great!Shipping is $35 for FedEx ground. USA sales and shipping to lower 48 states only.

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