Device and method for mounting ends of a handle into slits of a package. The systems can comprise a lighting device, a camera device for obtaining an image of the chemical reaction mixtures and an analyzer program to process data obtained from the image. The central workstation is selectively releasably engaged with the first and second spool supports. The apparatus also includes a pattern inspection unit with the DUV light source being built therein, for inspecting a workpiece pattern being tested by using the DUV light as illumination light therefore. An outer end of the bar is provided with a U-shaped swivel having a hook that rotates freely relative to the outer end and the grip portion of the bar.