PRODUCT DESCRIPTION The machine specify diameter and mass ball fall on the foam specimen from certain height, calculate the percentage between maximum drop height and rebound height, indicate foam resilience by spring rate. It uses a microprocessor to control, LCD display. GENERL SPECIFICATIONS Packaging Dimensions: (WxDxH) 680*470*860mm Power supply source: single-phase, AC220V�±10%, 50/60Hz (can be appointed) Gross Weight: 40kg APPLICATION STANDARDS: ASTM D 3574, ISO 8307, SEC N3296 STANDARD FEATURES Drop height 500±0.5%mm Drop ball Diameter: 16±0.05 mm, mass 16.8g ± 1.5 g Accuracy