Abstract: A laryngeal mask airway includes: a guide tube that has one proximal end portion inserted into the larynx inside the trachea and the other distal end portion exposed to the outside of the trachea, guides the insertion of a flexible bronchoscope and an endotracheal tube inserted into the trachea, and is divided into left and right sides; a mask that is integrally connected to the one proximal end portion of the guide tube, prevents fluid and air from flowing into the larynx inside the trachea from the outside, and is divided into the left and right sides; a handle portion that is provided on the other side of the guide tube and protrudes to both sides of the guide tube to correspond to each other; and a coupling member that couples the guide tube and mask, which are divided into the left and right sides, to each other.

Abstract: A spirit level is added to the club head of a golf club, such as a golf club driver, and observation of the level indicator bubble in the spirit level tells the golfer the level alignment of the golf club head, in the direction of the intended golf ball flight, when the golf club is in position to drive the golf ball. When the golf club head is level in this direction, the golf club face is in the proper position for striking the golf ball. The spirit level is constructed to withstand the speed of the golf club head as it is swung towards the ball, as well as the impact in striking the ball. The spirit level also functions as a golf club sight alignment indicator as pointing to and being aligned with the proper position at the center of the golf club face that should come in contact with the golf ball. The alignment indication aspect of the spirit level may also be enhanced by alignment indication markings on the top of golf club head for indicating the proper position for alignment of the golf club.