The ornamental design for a tool for driving a ground rod, as shown and described.
FIG. 1 is a bottom perspective view of the tool according to the present disclosure.
FIG. 2 is a side view of the tool according to the present disclosure.
FIG. 3 is a top view of the tool according to the present disclosure.
FIG. 4 is a bottom view of the tool according to the present disclosure; and,
FIG. 5 is a top perspective view of the tool mounted on a ground rod according to the present disclosure.
The broken lines shown in the drawing figures are for illustrative purposes only and form no part of the claimed design. The tool is for facilitating driving a ground rod. In addition, the illustrated embodiment of the design is not limited to the exact details shown in the drawings, since equivalents and colorable imitations thereof will be evident to a person of ordinary skill in the art and, thus, within the scope of the appended claim, which is intended to cover only the ornamental and novel elements shown in the drawings. The invention may be practiced otherwise than as specifically shown and described herein.