Think Metric... That's the way the rails work too... I kind of wish that North America would just switch completely. Because I'm in the industry (in Canada) I know metric others my age don't, my daughter only knows, my customers who are European do, a couple of kitchen companies do, younger customers do. So I have to flip between the two... Kinda confusing some days on which tape to have with me.
Um sorry for the rant.... I feel much better now.