On a lighter note, manufacturing tolerances have become very accurate. 3mm is the tolerance. If they could get that to zero, life for a modern collision repair person would be easier.
Lol. 3mm is .118”, so, still basically talking an 1/8” variance. Give or take .007” :).
And that’s modern manufacturing, still doesn’t help us. Even if every reproduction quarter were perfectly accurate to the factory spec, there’d still be folks here saying their quarters didn’t fit by well over an 1/8” because these cars weren’t that close.