Equipment Rules
This publication contains guidelines to help manufacturers, rules officials and other interested parties interpret the Rules relating to the design and manufacture of golf clubs and balls, as set forth in Appendices II and III of "The Rules of Golf."
Similar to the Rules, these guidelines will be continually reviewed, and modifications may be made in the future. The principles and philosophies expressed within this publication are held by both the United States Golf Association and R&A Rules Limited ("The R&A").