The sports instrument allows you to accurately determine the height of the jump of players of different heights. The structure is made of high-quality solid wood and plywood and includes a height-adjustable scale.

The measurement consists in the fact that the athlete, standing freely, straightens his figure and raises his arm vertically upwards. He then sets the bar at the level marked "0", according to the height of the upper edge of the farthest toe.

After the jump from the spot, the result is read directly on the scale of the device according to the point reached by the finger.