Focus Tool

FIG. 1 is a top, front, left-side perspective view of a focus tool;

FIG. 2 is a bottom, back, right-side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left-side view thereof;

FIG. 8 is a right-side view thereof;

FIG. 9 is a top, front, left-side perspective view thereof with environmental subject matter;

FIG. 10 is a front view thereof with environmental subject matter; and,

FIG. 11 is a top view thereof with environmental subject matter.

The dashed broken lines depict portions of the focus tool that form no part of the claimed design. The additional dashed broken lines in FIGS. 9 - 11 represent environmental subject matter that forms no part of the claimed design.