Every model in the Sigma 2 lineup is offered only with the adjustable shaft feature, largely because Ping’s team believes the effect of having the right length is so crucial to good putting.
Specifically, the proposal calls for a “minimum slope indication limit” that would allow green-reading books to continue to use numbers, lines, arrows or other indications to identify slopes on greens, but only in areas of 4 percent slope (2.29 degrees) or greater.
