Protocols and Procedures

Given the complexity of some of the tests required to evaluate equipment for conformance to the Rules of Golf, the following protocols and procedures are available to manufacturers and other interested parties detailing how certain tests are conducted. This is to help them better understand the measurement techniques so that they can design their products to be within the limits. Additional information and clarification of all equipment specifications, including their interpretation, can be found in A Guide to the Rules on Clubs and Balls (available as a Download).

Equipment Rulemaking Procedures

Equipment Rulemaking Procedures - November 2011

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Clubhead Size

Clubhead Size - Procedure for measuring the clubhead size of wood clubs.

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Club Length

Club Length - Procedure for measuring the length of golf clubs (excluding putters)

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Pendulum Test

Pendulum Test - Procedure for measuring the flexibility of a driving club

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Groove Measurement

Groove Measurement - Measuring Clubface Marking and Determing Conformance

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Moment of Inertia

Moment of Inertia - Procedure for measuring the moment of inertia of golf clubheads

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Iron SLE

Iron SLE - Interim Procedure for Measuring the Coefficient of Restitution of an Iron Clubhead Relative to a Baseline Plate

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Ball Weight and Size

Ball weight and size test procedures.

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Initial Velocity

Initial Velocity - Initial velocity test procedure.

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Overall Distance

Overall Distance - Actual launch conditions overall distance and symmetry test procedure.

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