On Wed, 09 Jan 2008 12:55:52 -0800, Kevin wrote:

Well the video does have some turning in it and may well spark a smile
from those here who have messed about a bit with old-timey radio
tubes. I still remember when all the grocery stores had a small
machine in the corner somewhere where customers could test and buy
tubes for their tvs and radios.

http://blog.makezine.com/archive/200...ccum_tube.html

I ran across a large suitcase-sized tube tester last summer at an estate
sale. If I'd had room to store it I'd have bought it just for the heck of
it.

The first computer I ever worked on had a tube tester built in :-).