| 摘要 |
The device, which assists the user to keep his head still when swinging a golf club, consists of a frame 1 which can be worn by the user in the manner of spectacles and which is constructed of opaque material provided with two apertures, each positioned in front of a respective eye of the user. The size and spacing of these apertures is such that when standing in the normal position of address the user will see a single aperture which provides a field of view not much greater than that which includes the ball and the club head behind it. A plurality of apertures 10 may be formed in a slidable mask member 7 for adjustable positioning behind respective rectangular openings 6 in each half of the frame. <IMAGE> |
