A player in doubt as to whether use of a device or other equipment would constitute a breach of the Rules should consult the USGA.
A manufacturer should submit to the USGA a sample of a device or other equipment to be manufactured for a ruling as to whether its use during a stipulated round would cause a player to be in breach of Rule 14-3. The sample becomes the property of the USGA for reference purposes. If a manufacturer fails to submit a sample or, having submitted a sample, fails to await a ruling before manufacturing and/or marketing the device or other equipment, the manufacturer assumes the risk of a ruling that use of the device or other equipment would be contrary to the Rules.
The following paragraphs prescribe general regulations for the design of devices and other equipment, together with specifications and interpretations. They should be read in conjunction with Rule 11-1 (Teeing) and Rule 14-3 (Artificial Devices, Unusual Equipment and Unusual Use of Equipment).
A tee is a device designed to raise the ball off the ground. A tee must not:
Gloves may be worn to assist the player in gripping the club, provided they are plain.
A "plain" glove must:
A "plain" glove must not incorporate:
Note: Material may be added for wear resistance, moisture absorption or other functional purposes, provided it does not exceed the definition of padding (see above).
Shoes that assist the player in obtaining a firm stance may be worn. Subject to the conditions of competition, features such as spikes on the sole are permitted, but shoes must not incorporate features:
Articles of clothing must not incorporate features:
During a stipulated round, the use of any distance-measuring device is not permitted unless the Committee has introduced a Local Rule to that effect (see Note to Rule 14-3 and Appendix I; Part A; Section 7).
Even when the Local Rule is in effect, the device must not be used for any purposes that are prohibited by Rule 14-3, including but not limited to:
A multi-functional device, such as a smartphone or PDA, may be used as a distance-measuring device, but it must not be used to gauge or measure other conditions where doing so would be a breach of Rule 14-3.