Mint LP Best Protractor

At the end of the day you get what you pay for and really the Smartractor is the bees knees, seriously.

A good friend has one and he has set up all my carts on my table ( after I have rough set them with simple tools) using it and watching him at work it looks very simple with the only caveat being the carts that have the stylus buried under the body instead of out front being more difficult but that would be true with any tool.

Is it worth $650?
Depends on how often you are changing carts, arms TT etc.

I am very fortunate that he lives just 2 miles down the road........

Which is the primary benefit of the MoFi Disk, its designed to emulate a record, only one with the geometry marked right on it.

Actually not a factually correct statement. That it is the ONLY one.
Just one example here for a lot less cash, plenty more on Fleabay.

https://www.ebay.com/itm/Hudson-Hi-Fi-Turntable-Cartridge-Alignment-Protractor-Mat-Single-Sided/254577953444?epid=828455521&hash=item3b46074aa4:g:mJQAAOSwK6Veohh3

The Geo Disc might be better made, nicer to use, that I do not know but I have used the Hudson version for years.