FIG. 1 is a perspective view of a hand held scanning tool casing showing our new design, on an enlarged scale;

FIG. 2 is a front view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is left side view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a perspective view of second embodiment of our new design, on an enlarged scale;

FIG. 9 is a front view thereof;

FIG. 10 is a bottom view thereof;

FIG. 11 is a right side view thereof;

FIG. 12 is a left side view thereof;

FIG. 13 is a rear view thereof; and,

FIG. 14 is a top view thereof.

The broken lines shown in FIGS. 1-2, 4-8 and 11-14 are environmental only and form no part of the claimed design.