For sale is a Stark Model 9-11 Dynamic Tube Tester. Nice, Compact, Canadian Made Tube Tester that will test old tubes as well as tubes that became available later on. There is a socket adapter included for 9 pin tubes. Also included is the tube data charts, as well as the following that will be emailed to the buyer in PDF form: schematics, operation manual, newer tube data, Ad. You will see it working. $65. See my other Ads for more gear. I will do package deals. Stark Model 911 Stark Hickok