Abstract: A golf swing trainer includes a substantially transparent tubular body having ends for mounting on a free end of a handle of golf club, transverse to the handle. Two chambers within the body are respectively defined by opposed co-axial transparent inner cylinders. A circumferential guide track at an interior surface of the body between opposed ends of the cylinder provides a path for a metal ball. During swinging of a golf club, the ball moves between the chambers and the track, providing an audible indication of movement between the track and the two cylinders, alerting a golfer to alter the golf swing.

Abstract: An orientation apparatus includes a device including a semi-spherical cap adapted for placement on a golf ball. The device defines a reference plane and has a window permitting meridional markings on the golf ball or the device to be viewed and to be aligned relative to the reference plane. The device is provided with a spirit level and a directional indicator for alignment of the markings with an intended direction of play.