And with proper care and feeding, that Tek 20 MHz scope will be working in another 30 years. They were well built to put it mildly. I have a friend who's scop

And with proper care and feeding, that Tek 20 MHz scope will be working in another 30 years. They were well built to put it mildly. I have a friend who's scope is a Tek 500 series, I think 30MHz, built around 50 years ago. Works fine once it warms up. He uses it for audio work, so 30Mhz is mostly overkill.