802.04 Artificial Devices - Official Rules and Regulations of Disc Golf
During a round, a player shall not use any artificial device that may assist in making a throw, except those devices that reduce or control abrasion to the skin (such as gloves, tape, bandages, gauze, etc.) and medical items (such as knee and ankle braces, etc.). Items used to prevent slipping on the teeing surface are also allowed. A player is specifically prohibited from using any artificial device that changes the position of the disc in the player's hand or artificially lengthens any of the player's throwing levers (fingers, wrist, arm, shoulder, etc.). The use of devices which assist in determining distances over 10 meters , such as range finders and GPS devices are prohibited. Measuring devices such as a tape measure may be carried and used to determine distances 10 meters and less for the purpose of rules enforcement.
A player shall receive two penalty throws, without a warning, if, during any portion of a round, he or she is observed by two players or an official to be using or carrying an artificial device that is determined by the director to violate section 802.04 A. A player who uses an artificial device after it has been determined by the director to be in violation of 802.04 A has also violated Section 3.3 of the Competition Manual and shall be penalized accordingly.