Abstract: A measuring device is disclosed for accurately measuring the hymenal orifice diameter of female children being evaluated for suspected sexual abuse. The measuring device includes a main body member comprised of a handle portion and an extended portion. Attached to one end of the extended portion is a transparent measuring member. The transparent measuring member is circular and has demarcations inscribed thereon for making measurements. A smiling face is also inscribed on the measuring member to alleviate the anxiety of the female child being examined. The measuring device is used by gripping the handle portion and positioning the measuring member over the hymenal orifice. When the measuring member is positioned over the hymenal orifice, each end of the hymenal orifice can be visualized through the transparent measuring member and the demarcations can be used to determine its diameter.