45 Rule 4 Common examples of uses of equipment that are allowed and not allowed during a player’s round under this Rule are: (1) Distance and Directional Information. • Allowed. Getting information on distance or direction (such as from a distance-measuring device or compass). • Not Allowed. » Measuring elevation changes, » Interpreting distance or directional information (such as using a device to get a recommended line of play or club selection based on the location of the player’s ball), or » Using an alignment device (see definition in Equipment Rules) to help align the ball. See Committee Procedures, Section 8; Model Local Rule G-5 (the Committee may adopt a Local Rule prohibiting the use of distance-measuring devices). (2) Information on Wind and Other Weather Conditions. • Allowed. » Getting any type of weather information (including wind speed) that is available from weather forecasts, or » Measuring temperature and humidity at the course. • Not Allowed. » Measuring wind speed at the course, or » Using an arti cial object to get other wind-related information (such as using powder, a handkerchief or a ribbon to assess wind direction). (3) Information Gathered Before or During Round. • Allowed. » Using information that was gathered before the round (such as playing information from previous rounds, swing tips or club recommendations), or » Recording (for use after the round) playing or physiological information from the round (such as club distance, playing statistics or heart rate).
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