A measuring device includes a measuring unit that measures the morphology of a convex portion, and a position fixing unit (15) that includes an opening (15a) in which the convex portion is to be disposed and a fixing member (15b) which includes the opening (15a) at a center thereof and against which the periphery of the convex portion is to be pressed. The size of the opening (15a) of the position fixing unit (15) is capable of being changed.
