I am looking to buy a cheap second hand oscilloscope to look at the voltage ripple on PSUs for my review site. I will also be using it for all sorts of things as I am an electrical hobbyist 
What specs and information should I be looking for to get a suitable one? The other great thing about them is that the ones I'm looking at make great antiques when they are not being used and make you look like an electrical genius xD

What specs and information should I be looking for to get a suitable one? The other great thing about them is that the ones I'm looking at make great antiques when they are not being used and make you look like an electrical genius xD