Abstract: A method and apparatus for increasing the accuracy of aiming in connection with putting a ball on a green of a golf course. A main part of the aiming aid is placed behind the ball so that the center of the ball is situated in a real or imaginary center of a recess, which can be half-circular. An alignment mark on the aiming aid is directed toward an intended target, such as the hole, and aligned with a marking, such as a text line, drawn line, or other marking, on the ball aligned with or at an angle to a perpendicular end edge of the aiming aid or a marked perpendicular line on the aiming aid. The aiming aid is removed before putting with the straight face of a club parallel to the marking on the ball.

Abstract: A method and apparatus for increasing the accuracy of aiming in connection with putting a ball on a green of a golf course. A main part of the aiming aid is placed behind the ball so that the center of the ball is situated in a real or imaginary center of a recess, which can be half-circular. An alignment mark on the aiming aid is directed toward an intended target, such as the hole, and aligned with a marking, such as a text line, drawn line, or other marking, on the ball aligned with or at an angle to a perpendicular end edge of the aiming aid or a marked perpendicular line on the aiming aid. The aiming aid is removed before putting with the straight face of a club parallel to the marking on the ball.

Abstract: The invention relates to an arrangement (1) for checking the quality of balls (2) in respect of their diameter (D) and any damage to their periphery (3), in particular intended for checking golf balls (2). A diameter gauge device (4) extending along at least part of the diameter (D) of an aforementioned ball is situated at a distance from a bottom support (5) so arranged as to support a ball (2) accommodated in the arrangement (1) for checking.