Convert from gran [Germany] to cental

Unit Definition (gran [Germany])
The gran is a traditional German weight unit, varying in size but typically about 60 milligrams.

Unit Definition (cental)
The cental is an alternate name in Britain for the U.S. hundredweight, which is equal to exactly 100 pounds (the British hundredweight is 112 pounds). Introduced by British merchants around 1850, the name was apparently coined after the model of the quintal. The cental has sometimes been confused with the centner.