The ornamental design for a positioningboard for positioning a tool mount, as shown and described.
FIG. 1 is a perspective view of a positioning board for positioning a tool mount, showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof; and
FIG. 6 is a top view thereof; and,
FIG. 7 is an operational perspective view thereof showing that the positioning board is mounted on a tool mount for positioning tools.
The dash-dash broken lines in the drawings depict environment and form no part of the claimed design. The dash-dot-dot broken lines in the drawings define the bounds of the claimed design and form no part thereof.
The bottom view forms no part of the claimed design and is omitted.