Is this a good leveling tool?

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.

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.

Does it then follow that we should not use USB microscopes to set SRA as the phono cartridge was invented before the USB microscope?

Again, I respectfully disagree. A longer level will certainly work on some turntables, but not those with spring suspended subchassis, unless the level weighs approximately the same as an LP and the weight is centered as an LP would be.

I have never used a spindle level but if, as you say, it tells you that the spindle is true, and the platter is not, this would probably indicate a problem in the manufacturing process, as the spindle should always be true to the platter. If it is not, the ensuing issues will be much greater than leveling can remedy.

09-10-15: Czarivey
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.


LOL indeed I have no idea what you are referring to, as I use a tripod mounted laser level and there is really nothing particularly convenient about it. Sometimes assumptions are just that; as are dismissive comments. I was speaking of leveling the platter, not the plinth so no, I would not measure the level of the platter by placing a bubble level closest to the edge of the plinth, unless you are speaking of closest to the circumference of the platter.