tube tester वाक्य

You still had your TV going out when tubes burned out, and then it was on your bike down to the 7-Eleven to use the tube tester and buy a replacement.
On occasion, a tube would malfunction somewhere inside the bowels of the radio I built or maybe in our cavernous black-and-white TV . It would be time for a trip to the corner store and the tube tester.
While my buddies worried about learning to throw a curve ball for Little League baseball, I was a regular customer at the tube tester that sat in Heard's Drugstore _ you'd plug a vacuum tube in and it would tell you whether it was good.