| A golf iron is an implement modeled to be used | | | | is set against a 60 degree plane. The length is |
| for striking the ball and primarily comes in three | | | | defined as the distance from the point of the |
| forms: woods, irons and putters notable by shape | | | | intersection between the two planes to the top |
| and intended use. A putter is a club with a loft not | | | | of the grip. For putters, the measurement of |
| exceeding ten degrees designed principally | | | | length is taken from the top of the grip along the |
| employed on the putting green. | | | | axis of the shaft or a straight line extension of it |
| The golf iron must not be virtually dissimilar from | | | | to the sole of the golf iron. |
| the conventional and usual form and make. The | | | | Callaway Big Bertha Fusion Irons |
| club must be constructed of a shaft and a head, | | | | The Big Bertha Fusion is a "traditional-looking iron |
| and it may also have a other material added to | | | | chock full of non-traditional technology, one that |
| the shaft to assist the player to obtain a strong | | | | has a reassuring appearance but also provides the |
| hold. All parts of the club must be set hard and | | | | benefits of an oversized, game-improvement |
| fast so that the club is one unit, and it must have | | | | iron". They were designed to retain a traditional |
| no external supplements. exceptions may be | | | | appearance but behind this familiar look is a whole |
| made for attachments that do not affect the | | | | host of unfamiliar technology. What they've tried |
| operation of the club. | | | | to do is blend these two aspirations into one club. |
| The overall length of the club must be at least 18 | | | | The result is the Big Berth Fusion. One of the top |
| inches (0.457 m) and except for putters, must | | | | three Game Improvement Irons currently on the |
| not exceed 48 inches (1.210 m). For woods and | | | | market and the best Callaway iron set for the |
| irons, the measurement of length is taken when | | | | higher handicapper. |
| the club is lying on a horizontal plane, and the sole | | | | |