An axle positioning structure to provide stable positioning and an automatic reposition function includes an axle and a rotary member. Measurements are carried out by manipulating the pivotally connected parts and the removable blade by inserting the moveable blade into the vagina of a female patient until contact with the reference point, e. The credit system and method provide a method of rewarding credits that may be used by a user to purchase multimedia content delivered to a client. A generally vertically disposed spit is normally contained within the confines of the metal housing, but is movable towards the open end of the housing.