A refractory system of the type having a refractory material attached to a wall by anchoring studs has a plurality of improved anchoring studs. The frame includes a plurality of pivotally interconnected frame panels such that the frame is convertible between an assembled state and a flattened state. Additionally, the invention could be advantageously combined with the Generic Framing Procedure as defined in ITU-T G. In the mounted position, the coupling means of the lid co-operate with the complementary coupling means of the enclosure, regardless of which face of the lid is facing the base of the enclosure. The position information may be obtained through a transceiver, accelerometer, transponder, andor RADAR detectable element fitted into the ball, apparel or equipment of players, the players themselves, or other playing equipment associated with the game or sporting event. Finally, the comparison of the players’ balls distances from the target ball is accomplished by observing whether the extended tape makes contact with the second player ball.