Abstract: A modular building comprises a support frame for various modules forming the floor, roof and external wall of the building. The floor is provided by floor modules that can be slid or lifted into place within the support frame. Room modules may be incorporated into the floor. Services may be installed in the modules.

Abstract: The invention provides a simulator or measurement apparatus for use in a bail game where a ball is hit from a stationary position. The apparatus includes a bail (2), a connecting means (1), a base (48) and a measurement means. The ball (2) is connected by the connecting means (1) to the base (48). The connecting means (1) operates to provide a number of degrees of freedom to the movement of the ball (2), and is in a unique arrangement for each position of the bail. It operates to allow the bail (2), when struck by an object, to substantially replicate some or ail of the motion characteristics of an unconnected ball, over a distance sufficient to measure such motion characteristics. The measurement means measures motion characteristics of the connected ball (2) over the distance when such motion characteristics are substantially replicated.

Abstract: A golf trainer (1) has a ground-engaging base (2) supporting a rail assembly (3) and a carriage (50) for guiding a golf club (typically a putter). Foot guides (12, 13) are of thin planar construction, having curved front edges and are configured and located to both indicate a good playing stance and provide support for the trainer (1) while the fronts of the player's feet are on them. The rail assembly (3) comprises a central post (25), and left and right side posts (26, 27). The base (2) comprises a central socket (30) for the central post (25), a left pair of sockets (31) for the post (26), and a right pair of sockets (32) for the post (27). The rail assembly (3) is secured to the base (2) by inserting the central post (25) in the socket (30), and simultaneously inserting the left post (26) in one of the sockets (31), and inserting the right post (27) in one of the sockets (32).

Abstract: A device for constraining a golf club to swing through an arc of predetermined radius comprises an elongated club engaging member formed by a pair of telescoping members. A ring member encircles the golfer's neck and the outer telescoping member extends from the ring member. A bracket on the lower end of the inner telescoping member secures the device to the club shaft. When the player swings the golf club through a stroke the ring member defines the center of the arc of motion of the club, and the radius of the arc of motion is defined by the telescoping members and the ring member. The telescoping members may be spring-biased together, and handles may also extend from the side of the club engaging member so that a player by observing the tilt on the handles will know whether or not he has kept his arms straight during his stroke. A strap may also be worn around the player's neck to act as a guide for the ring member.