I think that's the same set I bought at Woodcraft. The precision of
(IIRC) 0.0006" is marked on the blades, but no indication of whether
that's overall or per inch. In either case, I set the 6" up against a
pricey machinists square on a flat surface and there was absolutely no
light between the blades. I'm happy.


If it only says .0006, it's per inch, not total error.