Convert from sack [UK, wool] to rebah

Unit Definition (sack [UK, wool])
The sack [UK, wool] is a traditional unit of weight, varying for different commodities shipped in sacks. In Britain, for example, the sack was a traditional measure for wool, fixed by Edward III at 364 pounds (26 stone) in 1340.

Unit Definition (rebah)
The rebah is an ancient Hebrew unit of weight or mass equal to 1/4 shekel. The word means "quarter" in Hebrew.