The ornamental design for a graduatedbone tap, as shown and described.
FIG. 1 is a perspective view of the graduated bone tap;
FIG. 2 is a top plan view of the graduated bone tap;
FIG. 3 is a side elevational view of the graduated bone tap;
FIG. 4 is a front end view of the graduated bone tap; and,
FIG. 5 is a rear end view of the graduated bone tap.
The structural features depicted in broken lines have been shown for purposes of illustrating portions of the graduated bone tap that form no part of the claimed design.