AVO 163 Mutual Conductance/GM Vacuum tube tester.Made in England. Built to compete with RCA WT100 and Hickok 700 laboratory Testers.Adjustable screen, plate, grid volts.
Came from a United States Government test laboratory and was only used once in a while for quality control.
Machine is in excellent condition, I\'m testing a6L6GC bogie tube in the pictures, It test 5200 (See photos of bogie Tube)
Sorry no International shipping.International buyers will have to arrange for their own logistics/shipping.
USA shipping $100 or free local pickup in Los Angeles area
There is no manual,I used online manuals for testing set up. [link removed by ]
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