Clubhead Size for Wood-type Clubs
Clubhead volume will be limited to 460 cc plus 10 cc for measurement tolerance. Measurement will be made with a displaced water weight method.

Clubhead heel-to-toe dimension will be limited to 5 inches. Clubhead sole-to crown dimensions will be limited to 2.8 inches. Clubheads will be measured with the head positioned at a 60-degree lie angle. If the outermost point of the heel is not clearly defined, it will be deemed to be 0.875 inches above the horizontal plane on which the club is lying. Both dimensional limits include an allowance for measurement tolerance. Measurement protocol will be published in the near future.

All clubheads that have been submitted to the USGA measuring less than the specified volume limit, have length and height dimensions that are also less than the specified limits.