<P> The cubit is an ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow . Cubits of various lengths were employed in many parts of the world in antiquity , during the Middle Ages and as recently as Early Modern Times . The term is still used in hedge laying , the length of the forearm being frequently used to determine the interval between stakes placed within the hedge . </P>
the cubit is an ancient unit of length based on the distance
forearm length from the tip of the middle finger to the bottom of the elbow