Patent ID: 8632427

Claim:
A device for reading the slope of a golf green comprising a) a generally conical body having a top, a bottom that is narrower than the top and at least one side, wherein the bottom has an outer diameter that is smaller than the inner diameter of the grip end of a generally hollow golf club shaft, and the top has an outer diameter that is larger than the inner diameter of the golf club shaft, such that at least the top of the device is retained outside the golf club shaft when the bottom is rotatably inserted into the grip end of the generally hollow golf club shaft; b) a pair of positional balance markers disposed on opposite sides of a top portion of the body; and c) a means for securing the device in a fixed position in the golf club shaft comprising an expansion tube, a wedge, a bolt and nut, wherein the expansion tube is a generally cylindrical member adapted at one end for accepting the bottom of the device, and at the other end for accepting the top of the wedge, wherein the top of the wedge and the bottom of the device comprise male type fittings and the expansion tube comprises female fittings adapted to accept the male fittings, and wherein the expansion tube and wedge and are connected to the device with the bolt and nut.