Abstract: A device for training a golfer to putt correctly using the concept of muscle memory having an adjustable width, elongated guide path between parallel guide members mounted on an elongated pad. The pad has a fixed guide member and a laterally movable guide member allowing the golfer to form a lengthwise guide path of proper width to allow a putter head of a given width to be swung along the guide path. The device, thus adjusted, guides the golfer in swinging the putter along a straight line and hitting the ball along a desired path. Vertically spaced electrodes running the length of the respective guide member inner walls sound a buzzer when the head of the putter makes contact with the guide member wall. Lengthwise reference lines are provided along the guide path. Crosswise lines are located on the tops of the guide members.