The ornamental design for a balancingweight, as shown and described.
FIG. 1 is a first perspective view of the design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a back elevational view thereof;
FIG. 6 is a left-side elevational view thereof; and,
FIG. 7 is a right-side elevational view thereof.
The following discloses a new, original and ornamental design for a balancing weight as shown and described in the following specification with reference to the accompanying drawings, which form a part thereof.