The ornamental design for a displaydevice with graphicaluser interface for a combinedweighinginstrument, as shown and described.
FIG. 1 illustrates a first graphical state of a graphical user interface displayed on a display device associated with a combined weighing instrument; and,
FIG. 2 illustrates a second graphical state of the graphical user interface of FIG. 1.
The dashed lines of FIGS. 1 and 2 illustrate unclaimed graphical user interface elements. The dot-dashed lines in FIGS. 1 and 2 illustrate a display device for a combined weighing instrument, upon which a graphical user interface is displayed with the graphical states illustrated in FIGS. 1 and 2 for carrying out various operations of the combined weighing instrument. FIG. 2 shows a second graphical state caused by selecting a switching button in the first graphical state of FIG. 1, which causes the display to switch from the first graphical state shown in FIG. 1 to the second graphical state shown in FIG. 2, the second graphical state being an all function button display mode. The broken lines form no part of the claimed design.