Official USAV licensed product! Accurately measure the height of the net EVERY TIME with the Precise Height. A must for all coaches, officials, and tournament organizers. The Precise Height indicates the correct height of the net for juniors", women"s and men"s competition. The hook at the top allows the user to leave the Precise Height on the net while adjusting the height of the net at the poles. INGENIOUS DESIGN. Constructed of lightweight aluminum that locks into place at the desired height of USAV certified heights. Telescopes and comes with a convenient carrying bag. Collapsed size 3"4".