The march is the opposite as standard... the markings do close up as they go further out, but the gaps seem to slow down they're rate of tightening the further out you go. When I was marking it up, i was quite apprehensive, as the gaps between 8-10 were smaller than my custom shop, yet the rate flattened out, where as the custom shop gets tighter and tighter.
I guess it depends on the mechanisms. On the xray of the custom shop, the parallax seems to work on a worm track that runs around the inside of the scope tube like a spiral. I say appears because i'm just guessing. I think the leups work on a rack/pinion.