So take the Ken Willis, or any printed out arc protractor, and increase the accuracy several times. That is the MintLP tractor. The difference is in the method and fineness of the arc and alignment lines. You will need at least a 6x magnifier to see properly. And, as Palasr posted before, it gives the added benefit of the mirrored surface. It's $90 and you will get it within 3 weeks.
I have been using the protractor that came with my Triplanar for several years. This is also a mirrored protractor that is very much like the one offered Turntable Basics. It is very good and works very well. The first time I used the MintLP protractor I was floored at how much that extra bit of accuracy made in my LP playback. Everything was more articulate, from the lowest to the highest frequencies. And I know the change was much less that .5mm in length a just a nudge here or there.
Sorry to get carried away. I have to interest in the MintLp other than to be a very happy owner of one. And I need to add thanks again to Palasr for introducing this protractor to me.
I have been using the protractor that came with my Triplanar for several years. This is also a mirrored protractor that is very much like the one offered Turntable Basics. It is very good and works very well. The first time I used the MintLP protractor I was floored at how much that extra bit of accuracy made in my LP playback. Everything was more articulate, from the lowest to the highest frequencies. And I know the change was much less that .5mm in length a just a nudge here or there.
Sorry to get carried away. I have to interest in the MintLp other than to be a very happy owner of one. And I need to add thanks again to Palasr for introducing this protractor to me.