millercarbon
... get the MoFi Geo-Disk for $50 and be done. Works like a charm.I’m not a fan of the MoFi disc and just don’t find it precise enough. I think the best gauges use a mirror (such as the Mint) and align the stylus and cantilever, such as the old Wallytracktors. That’s the best alignment gauge I’ve ever used, hands down.