Cartridge alignment tool

Yes, the Mint Best protractor engineered for your specific table arm combo.

Here ya go!
 https://www.needledoctor.com/Mobile-Fidelity-Geo-Disc

Dr.Feickert is the best ever to make alignment of everything. Still relatively cheap for such precision tool, top quality! 

You can not measure Pivote to Spindle distance with cheaper protractors!
Also with Feickert you can choose between Baerwald, Lofgren and Stevenson

+1 for Mint Best. I have one for my Technics 1200 tables and one for my VPI Aries. Alignment with these was worth more than any single upgrade to my vinyl playback.

Excellent protractors can be had for free and up to big $$$.  If you have multiple tonearms/turntables and swap out cartridges regularly, then it make sense to invest in a universal protractor like the Feicket.  If you have one tonearm and one cartridge, a custom protractor like the MintLP would suffice and give you an accurate alignment.  You can also go on the Conrad Hoffman website and print off a custom protractor free of charge.  There are a lot of excellent options based on one's budget, system requirements, and desire to obsess over details.