The ornamental design for a handle for a powertool or similar article, as shown and described.
FIG. 1 is a front elevational view of a handle for a power tool or similar
article showing my new design, the rear elevational view being identical
thereto;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof; and
FIG. 4 is a right side elevational view, the left side elevational view
being identical thereto.