The Zwick 3107 is a unit manufactured by Zwick Roell company. It is a rebound tester used to determine the rebound resilience of foams and latex foam rubber. It has a resolution of 0.06 degrees and a frictionless pendulum-encoder. The diameter is 16 from the steel ball that was released. The unit's wear-free mechanism is ideal for continuous operation. Further, it determines the rebound height of the ball through the tripple light barrier.