Abstract: An improved golf ball marker comprises a cap having a generally hemispherical hollow, the hollow having approximately the same dimensions as one half of a standard golf ball, the cap having first and second linear slits forming a “T” shaped slit configuration for marking a golf ball inserted in the hollow with a “T” mark comprising a seam indicator line and a club alignment line. The golf ball is positioned and oriented in the hollow of the cap such that the seam is aligned with the first linear slit for making the seam indicator line on the ball with a marker and the second linear slit is perpendicular to the seam for making the club alignment line on the ball.

Abstract: An improved golf ball marker comprises a cap having a generally hemispherical hollow, the hollow having approximately the same dimensions as one half of a standard golf ball, the cap having first and second linear slits forming a “T” shaped slit configuration for marking a golf ball inserted in the hollow with a “T” mark comprising a seam indicator line and a club alignment line. The golf ball is positioned and oriented in the hollow of the cap such that the seam is aligned with the first linear slit for making the seam indicator line on the ball with a marker and the second linear slit is perpendicular to the seam for making the club alignment line on the ball.