Project Align it CartridgeAlignment Gauge is good?

Buy a Mint LP "Best Tractor" custom made for your arm and be done. The Project is crudely marked, with lines too think to be of any true accuracy - it's made for their tonearms on their tables, and the markings on the protractor itself merely correspond to the various effective lengths of their products only. If your SME happens to correspond with one of the 4 on offer, great, but if not, you're SOL. Your system deserves better; buy the Mint (which is around the same price anyway).

Palasr is correct. The Mint LP is a great tool.

Agree with the other posters. Most other alignment gauges I've used/seen are toys compared to the Mint.

Serious rigs deserve serious tools, and Yip's quality, service and responsiveness are second-to-none. Further, the instructions he includes with each Mint are the clearest I've seen.