1. A portable lightweight apparatus for locating the center of gravity of a golf club having an elongated shank with a gripping portion at one end and an offset head at the opposite end, comprising an elongated lightweight adjustable clamp having at least two portions disposed about a generally vertical axis, means for moving at least one of said portions toward the other portion to engage the gripping portion of the golf club along the axis of the shank, a flexible member connected to one end of said clamp, said flexible member including shank means located along the axis of said clamp and spaced therefrom, and rotating means having a chuck for receiving said handk means to that rotation of the flexible member rotates said clamp and causes the golf club carried by the clamp to rotate about the center of gravity thereof.

4. The method of locating the center of gravity of the head of a golf club comprising the steps of; mounting a flexible connection on one end of said golf club, rotating said flexible connection to cause said club to rotate about the center of gravity of the head while observing the approximate center of gravity, halting rotation of said club and applying a temporary mark to the head at approximately the observed center of gravity, rotating the club again while observing the temporary mark, shifting the temporary mark if necessary Until the mark maintains its normal appearance during rotation, and applying a permanent mark to the head of the club in place of the temporary mark after the center of gravity has been determined.