The ornamental design for a portion of a scale, as shown and described.
FIG. 1 is a perspective view of a portion of a scale.
FIG. 2 is a front view of the portion of a scale shown in FIG. 1.
FIG. 3 is a rear view of the portion of a scale shown in FIG. 1.
FIG. 4 is a left side view of the portion of a scale shown in FIG. 1.
FIG. 5 is a right side view of the portion of a scale shown in FIG. 1.
FIG. 6 is a bottom view of the portion of a scale shown in FIG. 1; and,
FIG. 7 is a top view of the portion of a scale shown in FIG. 1.
The present application is directed to the shape and contour of a portion, such as a display/interface portion, of a scale, such as a digital scale, of the design illustrated in the drawings. The portions shown in broken lines are for illustrative purposes only and form no part of the claimed design.