Is this a good leveling tool?

Assuming the platter is to specs, it shouldn't matter what level you use. The only difference would be that if you use a straight bubble level, you just need take 2 non parallel measurements. (90 degrees rotation is easiest.) It doesn't matter if the level doesn't pass through the center of the platter.

"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. "

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.

What do you make of this?

"That’s good advice. How do you prepare?

A firm, level work surface is necessary. Basic hand tools are required along with any special tools needed for tonearm or suspension adjustments. Special tools are usually furnished with the turntable or tonearm. A precision alignment gauge must be used to align the cartridge and set stylus overhang. A carpenter’s level is essential. A straight edge level works much better than a round bubble level.

When the work area is ready and the tools are collected how do you begin the set-up?

I start assembling a mass-isolated table by leveling the platter. The feet should be adjusted to be as close to the plinth as possible and locking nuts tightened to eliminate vibration and movement. Next verify that the plinth is level. If the platter is level and the plinth or arm mounting surface is not level, you’ve got a serious problem. Fix it before you proceed. All level checks should be done in two perpendicular directions—side-to-side and front-to-back. That covers the first stage of set-up for tables without spring suspension.

Are suspended turntables assembled differently?

Many suspended tables, like Linn Sondeks, must be elevated for access to the chassis adjustments. These tables should be mounted in a secure set-up jig that allows you to work above and below the plinth. The set-up jig must be level.

Again the first step is to level the platter and verify that the arm mounting surface is parallel to the platter surface. If the arm mounting surface is not absolutely parallel to the platter surface the situation must be corrected. The tonearm will not work correctly if there is even a small deviation from parallel. Fix the problem or replace the defective part. Do not use shims in an attempt to compensate for non-parallel surfaces!

After we’re sure that everything is level and true, what’s next?

At this point I install the cartridge in the tonearm with the bolts positioned at the midpoint of the headshell slots, mount the tonearm on the turntable and pre-adjust the counterweight. Before suspension adjustments begin, the tonearm cable and belt should be installed and the tonearm should be placed in the midpoint of travel over the playable surface of the record. Then the suspension can be leveled."

Here's a link to the entire article.

http://brooksberdanltd.com/turntable-setup-by-richard-hardesty