This is a used I C Tester.I do not know anything about electronics. I got this from a friend and when the led test is pressed the the leds light up.That is the only test i know how to do. It comes wit

 

For sale is a quad of 7591 power tubes made by Westinghouse and Tung-Sol. These tubes all test well above minimum with some flashing wear but very good. All have single halo getters. One Westinghouse

 

~1 VINTAGE VACUUM TUBE~ ~AMPEREX~ MADE IN HOLLAND~ ~7062 = 5965~~NEW OLD STOCK IN ORIGINAL BOX~ ~GUARANTEED~ ~PLEASE READ: OUR SIMPLE TERMS & AUCTION INFO~ ~PLEASE READ: IF YOU BUY MULTIPLE ITEMS

 

Here are 2 GE/RCA 6CA4/EZ81 rectifier tubes Tests matched and strong on a Heathkit TT-1 mutual conductance tube tester Please be courteous and pay promptly within 2-3 days. BE SURE TO CHECK OUT OUR OT

 

My father was the original owner. Used very little and then kept in a desk drawer for probably about 25 years.

 

3 BEAM POWER TUBE 6V6GTTESTED VERY GOOD [MAY BE NEW]GENERAL ELECTRIC 6V6 GTROGERS 6V6 GTROGERS 6V6 GTS/H TO US SMALL PACKET FOR 11.00$ TRACKED PACKET FOR 17.00$EXPEDITED PACKET [5 DAYS] 20.00$

 

FOR SALE IS A EIMAC 4-1000A GOT IT FOR AMP PROJECT THAT NEVER BUILT. TUBE FIL LIGHT AND NO SHORTS SHOWN ON METER.. SELLING AS IS JUST AS I BOUGHT IT .BUT I WAS TOLD IT WAS GOOD. PAY PAL 15.00 SHIPPING

 

Hi,, Up for auction I have six very vintage tubes. The two globe tubes have no numbers, but with no rhyme or reason I tested them as 01a's. ...Now here is how the tubes tested out on my Hickok U.S. Mi

 

musselmanstreasures Store Pair of Vintage Sylvania VT-52 Vacuum Tubes Unable to test....will gladly refund if they do not work. See my other auctions for more vintage tubes and save on combined shippi

 

2pcs Shuguang Natural Sound 12AX7-T Matched Pair(Gold pin,Test by AT1000, have actual test values ​​and curves) Description: 2pcs Shuguang Natural Sound 12AX7-T Matched PairTest by AT1000, have ac