The ornamental design for a hand saw, as shown and described.
FIG. 1 is a right side elevational view of a handsaw showing my new design
with a portion of the cutting edge being shown in broken lines for ease of
illustration only.
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a top, front and left side perspective view thereof;
FIG. 4 is a bottom, front and right side perspective view thereof; and