Laboratory instrument to perform rebound tests on soft rubber specimens and determine the rebound resilience of rubber the hardness of which lies between 30 IRHD and 85 IRHD. The test apparatus allows determining the percentage of rebound of the hammer measured on its height of fall. The test piece used is circular, 44.6 mm in diameter and 6 mm thick. Otherwise, a piece of round or square rubber, of approximate dimensions, may be used. Applicable Standards: DIN 53512 - ISO 4662