Arm Board levelling: is this good enough?

More important is that the arm board is in the same plane as the platter surface. If they are both off perfect by the amount shown, you are more than good enough. Even a little more error from true horizontal could be tolerated if the platter has a like error.

Coming from an almost cost no object tooling and measurement background ( think F-22, B2… etc ) I doubt  your tool. I agree w Lew on seeking same result from platter and armboard . Finally, I love your posts and adventures with multiple arms and pods. I just added a 2nd Brinkmann Bardo and am also working an arm pod DIY project. Best in music to you !!!!!

jim

If the inclinometer is off, at least it confirms the platter and the armboard are parallel.

The thing that surprises me is that all three agree with each other and the platter!

I'll get around to doing the other table one of these days.

The most important thing is that it sounds good.  Remember your records themselves are not all perfectly flat either.  Being off by such a small amount is insignificant given the overall vagaries that are inherent in vinyl playback mechanisms overall.

The most important thing is that it sounds good. 

Really.

If the armband is not level the arm is constrained.

You worry about 0.1g tracking - an out of level arm board has a large impact on the bearings and arm motion, not to mention the unbalanced forces on the cantilever.

What do you do when the cantilever is bent or stylus worn more on one side - do you turn it around to wear out the other side ????