The Cleveland Smart Square Putter utilizes 2 squares on top of the putter to aid in alignment.  Cleveland tested the Smart Square and found that golfers aligned it 23% more accurately than a 2 ball putter.  The 2 squares create 2 parallel lines which extend from the center of the face frame the ball perfectly, and 2 perpendicular lines offer instant feedback when the putter is misaligned at address.  The Cleveland Smart Square Putter is available with a center shaft or heel shaft, and is also available in a longer “Almost Belly” 39″.