Originally Posted by
cruiserandmax
I think I was measuring across the wrong holes- measuring across the diameter it looks like ~ 61mm BCD... is that right!?
You're measuring correctly now but the number is a little off, it's 64mm. That kind of riveted together chainring setup may be hard to find new, you may have better luck tracking down that whole crankset on Ebay. That way you'll know it'll fit the bottom bracket you have now.
This advice is for a home mechanic who's pulling their own cranks and can determine if the bottom bracket is still good. If you're going to a bike shop they'll have an idea for a new crank/BB that will work for you. You definitely need a new chain, too. The cassette may be ok.