the preferred embodiment herein described is not intended to be exhaustive or to limit the invention to the precise form disclosed . it is chosen and described to explain the principles of the invention and its application and practical use to enable others skilled in the art to utilize its teachings . referring now to the fig1 reference numeral 10 generally depicts a golf putter head constructed according to the principles of this invention . putter head 10 is connected to an elongated shaft 12 which terminates in a grip ( not shown ) and is used to roll a golf ball ( not shown ) along the ground , usually after a golfer has landed his ball on a putting green . the putter head 10 shown has an offset hosel 14 but the principles of this invention will apply to nearly any currently existing putter head shape . putter head 10 defines a ball striking portion 16 , whose center of gravity ( commonly referred to in the trade as the sweetspot ) is located along dark colored line 18 . putter head 10 illustrated is a heel - and - toe weighted model with weighted portions 20 , 22 positioned adjacent the terminal ends of the head to define a centrally located cavity 24 . this positioning of weight counteracts the tendency of the head 10 to twist or torque when a ball is struck slightly off center and is a common feature on a number of different putters . a strip 26 of tape or similar material ( paint may also be used ) is located on bottom flange 28 of head 10 between weighted portion 20 , 22 . preferably , strip 26 is located with its terminal edges 80 , 32 equidistant from the sweetspot designated by dark line 18 . a block 34 of any suitable material and shape is affixed to putter head 10 and preferably located in the geometric center of strip 26 as shown . block 34 has side walls 36 , 38 and one or more end walls 40 ( two are shown ). end walls 40 of block 34 preferably include dark colored line 18 to assist the golfer with target line selections and to identify the sweetspot . as shown , line 18 is bordered by sections of light colored lines 42 which sharply contrast with line 18 . each side wall 36 , 38 is of dark colors similar to the color of line 18 . strip 26 is preferably of a light color sharply contrasting to line 18 and side walls 36 , 38 . operation of putter head 10 as a visual indicator is shown in fig2 - 4 . in fig2 the golfer ( not shown ) has achieved proper positioning of eyes and club and sees only lines 18 and 42 and strip 26 which is preferably the same color as lines 42 so as to blend in therewith . fig3 illustrates the view a golfer will see when the toe 23 of head 10 is pointed skyward if he sets his eyes outside of the intended target line . in this position , t he golfer will see the contrasting color of side wall 36 and strip 26 and will know to realign his head or the putter head 10 . in fig4 the golfer has positioned his eyes inside the target line or has pointed the heel 21 of head 10 skyward . the sight of wall contrasting with strip 26 will serve to tell the golfer to again reposition to achieve the correct alignment position ( fig2 ). it is understood that the invention is not limited to the details above given , but may be modified within the scope of the following claims .
a golf putter which includes a clubhead having a visual indicator block affixed thereto . the block is used in conjunction with a material strip of a contrasting color to provide visual indication of a proper eye and clubhead portion prior to the stroke .