looking at the illustrations:
http://www.recycledgoods.com/tektron...tor-19869.html
I think this may be the Tek "high-res" one, but I now believe I was confusing this with another brand of monitor that had a larger tube that filled the rack width, so all controls were at the bottom instead of the sides. The stripes appear to be visible in the closeup, and my guess is they are finer than the regular tube, but still not as fine as you would really like.