Turntable leveling


Pardon the possible obtuseness of the question, but - in the opinion of forum readers - how important to sound quality, LP and stylus wear is having my turntable precisely level? Try as I might, I can't get it <2 degrees from absolutely horizontal measuring with the Levlx iOS app though it looks good with a bubble gauge. I've looked online and I can't find a consensus opinion on this matter though I know the more level the better.
Thanks in advance,Keith
kacomess
My turntable sits on a 150 lb circular granite slab glued to a gimballed gearing from which hangs a 250 pound pendulum. It is accurate to 1/1000 of a degree. Just kidding. A spirit level is all you will ever need.  
I had a small circular level ( bubble inside circle) that came with my Clearaudio turntable when I bought it. So I set up with that.
Then checked with a small joiners level  (4 inch) and then with a larger ( 2 foot) builders level.
They all showed the same. I am thinking that fraction off would not be a problem audibly. As to wear, I do not know.

@lewm 
Haha! “An ‘analog’ bubble level”
I laughed aloud at that. 
Not sure why it was funny to me, because it’s pretty much true.
If a little round bubble level doesn't give you perfect leveling, you're living too close to the North Pole.
@glennewdick We may have spoken about this before but there is an after-market unit called Easy VTA for Jelco arms.