Hi Guys,
Personally i wouldn't waste the money on this system. We are talking about relativity here. You don't even need numbers on the rings. If you use the rings at the counter at the bench mandrel case closed.
This is something that comes up quite a bit, which mandrel and sizer
is the best.
Wheatsheaf has an extremely good reputation for accuracy. They are
pricey.
However, a smart workshop manager would buy a set of ring sticks and
ring sizers from the same company, and buy enough for the workshop
and the front counter. It doesn’t matter what brand as long as they
sets “match”.
There are too many differences in sizers and sticks, and standards
are not enforced, to mix and match.
Regards Charles A.