The Dynacraft Lie Fitting Board is used to determine the correct lie for a golfer. Hit balls off the textured surface and it leaves a black mark on the club's sole which can be easily wiped off and requires no special tape. The hole allows ball to sit without rolling and positioned forward to increase the effective strike area. Approximately 1/8" x 8" x 16". Use on a hard surface like a golf mat.
Fitting notes: If the black mark on the bottom of the club's sole is toward the toe, it's too flat. If it's toward the heel, the lie is too upright. If it's in the middle of the sole, you are good to go. A mark ¼" from center may require a 1° lie adjustment and ½" would indicate a 2° adjustment.