The height adjustment mechanism in range 260-305 cm for the 90x120 cm backboard. It is a special construction with the bearing roller system, which roll in a special rail, that enables smooth change of the rings height in range between 2600 mm do 3050 mm. The construction of the mechanism can be adapted to all types of backboards and basketball constructions.
To adjust the height of the ring a specialhook ended handle has to be placed in the screw and by twisting right or leftthe height of the backboard and ring is being adjusted. A trapeze screw TR20and a trapeze nut is being used in this mechanism so it is impossible for thebackboard to drop down from the lifted position ( 3,05 m ).