Convert from arratel, artel [Arab] to point

Unit Definition (arratel, artel [Arab])
The arratel is a versions of a traditional Arab unit of weight; see rotl. The spelling "arratel" is used in Portugal as an alternate name for the libra.

Unit Definition (point)
The point is a unit of mass used for precious stones such as diamonds. One point equals 0.01 carat, or exactly 2 milligrams.