Patent attributes
An alignment guide for practice putting has a base with perpendicular target and putter face lines. An unobstructed gap extends away from the putter face line along the target line. A pair of guide rails are secured to the base in parallel relationship to and on opposite sides of the target line and spaced apart by a distance slightly greater than the distance from the toe to the heel of the putter head. The putter head can, therefore, move freely between, but be guided by, the rails. An adjustable stop limits the backswing of the putter head to allow comparison of the length of the backswing with the travel distance of the ball. An adjustable pair of stops simultaneously limiting travel of the toe and the heel of the putter head in the follow through confirm that the putter face has remained square to the target line.