Distance-measuring devices must be limited to measuring distance only.

The use of a distance-measuring device would constitute a breach of the Rules if:

• The device has the capability of gauging or measuring other conditions that might affect play (e.g.wind speed, gradient, temperature, etc), or;

• The device has some other non-conforming feature, including, but not limited to,recommendations that might assist the player in making a stroke or in his play, such as club selection, type of shot to be played (e.g. punch shot, pitch and run, etc.), or green reading (i.e. a recommended line of putt), or other advice related matters. However, it is permissible to use such a device, during a stipulated round, to access distance information from previous rounds that has been processed prior to the commencement of the current round (e.g. a chart of all club yardages), or;

• The device has the capability to assist in calculating the effective distance between two points (i.e. distance after considering  gradient, wind speed and/or direction, temperature or other environmental factors).There would be a breach of the Rules even if all of the above features can be switched off or disengaged, and in fact are switched off or disengaged.