| 摘要 |
A golf putter head includes a front face ( 1 ) for striking a golf ball. At least the part of the front face ( 1 ) that is intended for striking the ball is defined by a sphere, the centre of which is to the rear of the putter head and, when the putter head is orientated in an upright position appropriate for striking the ball, the centre of the sphere is from 23 to 25 mm above the bottom of the putter head.
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