The double bass stands around 180 cm (6 feet) from scroll to endpin. However, other sizes are available, such as a 1⁄2 or 3⁄4, which serve to accommodate a player's height and hand size. These sizes do not reflect the size relative to a full size, or 4⁄4 bass; a 1⁄2 bass is not half the length of a 4⁄4 bass, but is only about 15% smaller. It is typically constructed from several types of wood, including maple for the back, spruce for the top, and ebony for the fingerboard. It is uncertain whether the instrument is a descendant of the viola da gamba or of the violin, but it is traditionally aligned with the violin family. While the double bass is nearly identical in construction to other violin family instruments, it also embodies features found in the older viol family.