Patent ID: 7335112

Claim:
An adjustable golf putter head, comprising: a putter body comprising an alignment line formed on a top surface of the putter body, which extends and points in a direction that defines a putting direction of the putter head and which serves as a visual aid to align the putting direction of the putter head in a direction of a target line toward a target point, wherein the alignment line comprises an elongated center line marking that extends from a front portion to a back portion of the top surface of the body, wherein the alignment line points to a sweet spot region on the planar ball striking face; and a putter face having a planar ball striking face, wherein the putter face is pivotally connected to the putter body to selectively adjust a face angle of the putter face relative to the alignment line to one of a plurality of face angle positions including a square face angle position where the planar ball striking face is perpendicular to the alignment line, and open face angle and closed face angle positions where the planar ball striking face is not perpendicular to the alignment line, wherein the adjustable golf putter head further comprises face angle indicia providing a series of positional marks corresponding to different ones of the plurality of face angle positions, wherein a given face angle position is selected by aligning the alignment line to a corresponding positional mark.