Cartridge alignment tool

@chayro well, i have 6 differen tonearms and pivot center point is easy to locale and to point Feickert right there. When i set up any cartridge i trust my eyes with Feickert protractor. At the moment i just don’t know of
any better protractor for reasonable price built like that german Feickert.

I think an error of a fraction of a mm can not be detected by my ears, so i don’t care.

Tonearms OK, but almost impossible in many turntables .I have a Feickert , one of most common decent arms are Pro-Jects 9cc variants , very difficult .Of the 100+ TT's  I've owned over the last 50's the easiest to do is the
Pioneer TXL-1000 current production than has a large  pin sticking up
on top of pivot . With this you can get dead on a fine-line or shibata that makes this cheap TT, if 700$ is cheap, sing better that many more expensive ones .

I've used CartAlign, Dennison protractor, GeoDisc. I am currently using CartAlign. 
Any alignment tool used is better than no alignment tool used.

Re: Using the Mint.....When I got mine, he recommended and I got a 50mm Magnifier. #7501.    I would say this is nearly a necessity to get things right.   Without the magnifier, I was just a bit off the radius, with the magnifier, spot on with no effort.