Abstract: A putter wherein the shaft between the grip and the head includes three folding guide ribs which can be pivoted to a position flush with the shaft or extending outwardly therefrom at right angles for the purpose of surveying a golf course green between the hole and the golf ball. Optionally, a level indicator can be included in one or more of the ribs. The ribs are secured relative to the shaft by a surrounding threaded ring in both the flush position and the outwardly extending position. In one embodiment, the ribs extend from only one side of the shaft, and in another embodiment, from both sides.