Abstract: An aiming apparatus attached to the shaft of a putter to help a golfer achieve a desired orientation for the putter's head, said desired orientation being one in which the head is desirably oriented with respect to a target toward which a golfer is about to direct a ball, said putter having an elongated shaft with proximal and distal ends, and there being a grip affixed to the shaft's proximal end and a head affixed to the shaft's distal end, comprising:a) a clamp selectively attached to the putter's shaft near the grip;b) a battery-operated generator of radiant energy that is selectively operable by a golfer to direct a narrowly focussed beam of radiant energy in a predictable direction, said radiant energy being within the range of wavelengths that are visible to the human eye, and the generator having a housing;c) a device for supporting the generator housing with respect to the clamp in such a way that the direction of the beam of radiant energy may be selectively varied by the golfer while the golfer is