Get a jump on the competition with the most affordable and accurate device on the market for measuring vertical jump! Telescopes from 4 to 12 feet. Moveable arms placed at 1" increments allow for accurate jump measurement. Highest arm reached remains angled until jump reading is measured. The heavy duty base is fitted with easy glide casters providing both stability and portability. Vertical Challenger comes with handy reset pole. Includes 22 Lb weight and 2 wheels for portability. this device can be used to measure height of the individual, standing arm reach, standing vertical leap, and vertical jump from approach.