Convert from twain to pe [Portuguese]

Unit Definition (twain)
The twain is an old word for the number two, derived from the Anglo-Saxon twegen. The American author Samuel Clemens (1835-1910), who had been a riverboat pilot on the Mississippi in his youth, took his literary name from a traditional riverboat phrase "mark twain", meaning "exactly two" fathoms of water. This was the minimum depth needed for the boats to operate safely without running aground.

Unit Definition (pe [Portuguese])
The pe is a traditional Portuguese foot, equal to 12 polegadas or about 33.324 centimeters (13.12 inches).