How are QR skewers measured when it's internal cam? I'd guess it's from the outboard end of the cap on the lever end to the tip of the rod on the far end? But maybe length refers to OLD of the matching hub, or distance between fork blades or something.

This would be for a 1994 Trek 730. I measured 150mm from cap end to rod end, and 127mm of exposed rod minus the lever-end cap.