Parallel? How do you set the VTA?


Silly question, but how do you guys determine whether your tonearm is parallel to the record surface? I had my tonearm set up happily for months, but recently started messing around with the cartridge alignment and the VTA, and I'll be damned, but the folded index card method gets me nowhere now. Even with adjustments I keep getting the same visual effect. Happily my ear tells me when the setting is off, but as a base, how do you determine conclusively your tonearm is parallel? For reference, I have a VPI Classic. Thanks.
actusreus
I set my arm initially with a bubble level on the headshell. If it sounds bloated, I raise the rear. If it sounds too shrill, I lower the rear. Level is usually pretty close to the final result though.
Also a good starting point for Azmith, although I use a Fozgometer for final adjustment, and then my ear.
Manitunc,
Was it you who posted a link to a very small bubble level a while ago in a different post? The one Jmcgrogan linked to is way too heavy at over 6 grams.

Doug,
This conversation reminds me of the discussion we had a while ago about setting the VTF for the Delos at 1.75 g. Yes, my ear has doubtless become more sophisticated and discerning after I got into analog a few years ago, and as I've upgraded to a more resolving equipment, but some of us just don't have the same acute hearing that you do. It makes me feel better knowing that at least I can start my adjustments with a base reading recommended by the designer. If I'm lost in messing with the VTA, VTF, and overhang using different protractors in search of the optimal sound, I'd be reassured to be able to go back to the base settings. Just for that it is worth for me to be able to set up my tonearm parallel to the record surface, just like it is to set the VTF to 1.75g for my cartridge. It might be non-sensical to a seasoned audiophile like yourself, but it makes sense to me, a relative novice compared to many here.
Actusreus, you start with a new deck of cards and insert as many as necessary on top of the record so they stack up and are close to the arm. A bit easier to see if you are parallel to the bottom of the arm when the distance between the top card and bottom of the arm is small. My eyes and distance judgment is not as good as some responding so this additional aid gives me a better estimation of parallel for the starting point. After that I adjust by ear as and if necessary.
"...some of us just don't have the same acute hearing that you do."

But, Actusreus, read your own OP (that I quoted). You've already said that you DO hear the difference.

You don't need more acute hearing, you've already got it. You just need the self confidence to trust it. More time listening, less time measuring. :-)
Jperry,
Thanks! That's what I thought it was.

Doug,
I'm working on it...:) Good advice, as always.