The Engineer's Ring is a ring worn by members of the United States Order of the Engineer, a fellowship of engineers who must be a certified Professional Engineer or graduated from an accredited engineering program (or be within one academic year of graduation to participate). The ring is usually a stainless steel band worn on the little finger of the dominant hand. This is so that it makes contact with all work done by the engineer. Rings used to be cast in iron in the most unattractive and simple form to show the nature of work. The ring is symbolic of the oath taken by the wearer, and symbolizes the unity of the profession in its goal of benefitting mankind. The stainless steel from which the ring is made depicts the strength of the profession.