A simple but effective device for measuring jumping height relative to the height of the athlete. Can be fixed to any suitable vertical surface. Complete with laminated activity card primary secondary age use. A jump from a standing position in which the participant competes against their own height and weight. The Vertical Jump is an internationally recognised measurement. The Sportshall event uses a magnetically held sliding scale, which is adjusted to the participant's height before each jump. Lead Times May Vary On this Product.