How do you level your turntable?


Short of buying a 400 dollar digital level, what have you found that really does the trick. I've tried various cheap bubble levels with fair to poor results.
rloggie
I have a linear TT (LT-30) and am another who uses the Sears $25 digital laser level.
1. Level stand
2. Check TT from platter and base
3. Sit back and enjoy, and do not check again unless I need to
I used several long levels (two 4' and one 2') to check the accuracy of three 12" ones. (One of those was actually out a little.) The accurate ones are used to level the platter. Once that is done, I permanently mount a pair of custom made glass vials into the plinths of my turntables, so the user can keep an eye on it all along. To me, levelness is a big deal.
Great input really got me thinking. I had forgotten that the spindle of my turntable is removable. With it out I was able to put the bullseye bubble level directly in the center of the platter. That gave me a reasonably good reading. Guess I'm headed to Sears now.