FIG. 1 is a perspective view illustrating the ornamental features of the hand-held diagnostic instrument in accordance with the present invention;

FIG. 2 is a top view of the instrument shown in FIG. 1.

FIG. 3 is a bottom view of the instrument shown in FIG. 1.

FIG. 4 is a side view of the instrument shown in FIG. 1.

FIG. 5 is a front view of the instrument shown in FIG. 1; and,

FIG. 6 is a rear view of the instrument shown in FIG. 1.