The ornamental design for a weightscale, as shown and described.
FIG. 1 is a perspective view of a weight scale showing our new design;
FIG. 2 is right side elevational view showing the design for the weight scale of FIG. 1;
FIG. 3 is a left side elevational view showing the design for the weight scale of FIG. 1;
FIG. 4 is a front elevational view showing the design for the weight scale of FIG. 1;
FIG. 5 is a rear elevational view showing the design for the weight scale of FIG. 1;
FIG. 6 is a top elevational view showing the design for the weight scale of FIG. 1; and,
FIG. 7 is a bottom elevational view showing the design for the weight scale of FIG. 1.
The broken line showing of portions of the weight scale in the drawings is included for illustrative purposes only and forms no part of the claimed design.