Next week i'm going to go look at a Beseler 57MB with a cold light head. I don't know if there is a negative carrier with it or if any of it even works.

What should I be looking for, testing, checking or looking out for? I had pretty much given up on a 5x7 enlarger but this one popped up on craigslist so I'll check it out.

Here's the Craigslist link with pictures (hope thats OK to put in)