Arbitrary Unit of Mass
Obsolete: This article refers to an aspect of the game which has been removed. It is retained for historical reference only.
An aum (or Arbitrary Unit of Mass) was the standard unit of weight in Crawl. It had no real-world equivalent, and item weights were generally assigned according to game balance rather than realism. Each point of strength increased your carrying capacity by 25 aum. When this capacity was exceeded, the player gained the encumbered condition.