When starting this command, the command which was starting before it is automatically ended.
            A procedure is shown below.
            1. It chooses the object. (For the details, refer to  The way of choosing
            object.)
            The effective object is only the sweep body that a sweep was done in the
            axial direction of Y and the object which is adjusting a ring size already.
            2. When [Ring Size]command is done with [No.[Japan]].
            F5 key is pushed, and the [No.[Japan]] mode is taken.
            3. When [Ring Size]command is done with [Diameter].
            F6 F6 key is pushed, and the [Diameter] mode is taken.
            4. When [Ring Size]command is done with [Clearance Angle].
            F8 key is pushed, and the [Clearance Angle] mode is taken.
            5. It starts [Ring Size] command.
            
            
             
[Ring Size] Dialog Box
            The [Ring Size] Dialog Box is displayed. It specifies Ring Number(JAPAN)/Ring
            Diameter(mm) and Shank Clearance(mm)/Clearance Angle. In [Ring Size] command
            2nd since then, it isn’t possible to use [Undo] [Redo] to change an immediate
            data. Once again,change by [Ring Size] command.