K2 measures there LENGTH the same as any other company, but what they do differant is the sidecut, which is measured by putting the ski on a flat surface on its side, then measureing from under the foot down to the surface of the table, I-beam, ect. usally you will see numbers around 14mm or so. This is not radius. its just an additional demension k2 gives ya.
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I got 2 sets of New in wrapper 04 Scratchs for sale, both 174's, one with Look racestock bindings, one with rossi scratch bindings. PM me with a resonable offer for eather.