Definition for View source for Graves speculum

The Graves speculum is a vaginal speculum that is available in sizes small, medium and large. The bills of the Graves speculum are wider than the bills of the Pederson speculum. The sides of this speculum are also curved. According to the University of Washington, this type of speculum is best used in women who have had sexual intercourse. This is because the vaginal canal may be wider in sexually active women, making the wider bills of the Graves speculum necessary to visualize the cervix and other internal structures of the pelvis. The Graves speculum also is available in plastic and metal varieties.