Phillips Fiber Art SQ225 22.5 Degree Squedge Ruler
A Wedge + A Square = A Squedge! Wedges make circles, but Squedges makes both circles and squares. The 22.5 Squedge makes a 16in finished square (16.5in unfinished) with 16 Squedge pieces. The slots in the tool let you mark precise lines for making the shorter pieces. The longer pieces are used for the corners and the shorter for the inner sides.