The ornamental design for a surgicaltool for measuring a vagus nerve size, substantially as shown and described.
FIG. 1 is an isometric view of a vagus nerve sizing device according to the invention showing the new design;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof, the left side view being an identical mirror image thereof;
FIG. 4 is a rear view thereof; and,
FIG. 5 is a second embodiment of a vagus nerve sizing device showing my new design, with the only difference being the tool tip shown open to size a larger vagus nerve.