Is this a good leveling tool?

There's no need to level the plinth on the OP's TT. And on a Clearaudio, it's probably not made of wood anyway. You first level the shelf, then put the TT on it and level it at the platter. That's all you need to do.

"08-16-15: Viridian
Well, in some cases, the above is bad advice. Pink Triangle, and others made intentionally dished platters on some models to flatten pinch warped LPs when used with a supplied clamp.

In these instances a laser level adjusted to the inner and outer edges, or the spindle level, would seem to be the best ways to accomplish this."

Those platters are not very common. But if you ever have to level one, the spindle level would be a last choice. You have no way checking anything beyond the spindle itself. So if there is any type of imperfection further out, you would have know way of knowing.

I guess you could use a laser level, but the dish design platter has been out long before laser levels were available. The way you level those is almost exactly the same way you do a regular platter. You use a longer level and make sure it passes over the outside edges (the highest point), in 2 places. And you'll need to take measurements from 2 non parallel lines, just like in the first example.

LOL it's just a piece of plexi-glass attached to $3 pocket bubble level.
I believe that it carries the purpose of convenience and nothing more.
If you adjust the position of your plinth placing bubble level closer to the edges, you can get more precise alignment than if it placed at the very center.

This is all you need. $7.00 on Ebay !
http://www.ebay.com/itm/Turntable-Platter-and-Tonearm-Headshell-Bubble-Level-Combo-Kit-/251943100095?hash=item3aa8fa9ebf

"09-10-15: Viridian
Don't use a laser level because dished platters were invented before laser levels were available. I'm not sure of the logic in this."

I agree. If you pick a statement apart the meaning can change. When that happens logic is optional. Lets have another look and see if we can make some sense of all this.

""08-16-15: Viridian
Well, in some cases, the above is bad advice. Pink Triangle, and others made intentionally dished platters on some models to flatten pinch warped LPs when used with a supplied clamp.

In these instances a laser level adjusted to the inner and outer edges, or the spindle level, would seem to be the best ways to accomplish this."

It doesn't seem that way to me. If you use a spindle level, you have no way of knowing if anything beyond the spindle is true. And as Czarivey states, the center is the least accurate place to take a measurement.

Although you could use a laser level, there's really no reason to. You don't need to take high and low point measurements.

To answer your question of not seeing the logic in using a laser level because the dish platter was around long before it was invented, my intension was not to say you couldn't use a laser level. But what did they use. And in this case, you would use a long bubble level that passes over 2 outer (High) points of the platter. You'll need to take 2 non parallel readings like with any other platter. If the platter happens to be warped or bent in some way, it won't level.

Here's exactly what I sais in my 1st post. I think its pretty clear.

"Those platters are not very common. But if you ever have to level one, the spindle level would be a last choice. You have no way checking anything beyond the spindle itself. So if there is any type of imperfection further out, you would have know way of knowing.

I guess you could use a laser level, but the dish design platter has been out long before laser levels were available. The way you level those is almost exactly the same way you do a regular platter. You use a longer level and make sure it passes over the outside edges (the highest point), in 2 places. And you'll need to take measurements from 2 non parallel lines, just like in the first example. "