미터법.

Mostly because the Last Tavern was atop a large rock, thirty armlengths high and forty wide, much of the top taken over by the tavern.

He had never seen a sword like that before. The hilt was about three handspans long, with a cross guard that was also three handspans.

다 이런 식으로 1미터=한 팔, 10센티미터=한 뼘, 1킬로미터=1리그로 번역되었는데, 

아무리 그래도 판타지 세계에 미터법은 어울리지 않는다고 판단했거나 

영미권 독자들이 미터법을 알아들을 수 있을 리가 없다고 판단한 듯.