ZC3A Silver Rebound Hammer Purpose and benefits Precision testing of concrete hardness to provide reliable results for professional quality control and assessment A robust tool designed to interact with various concrete surfaces during testing, supporting consistent measurements Key specifications and performance Pointer length: 20.0 ± 0.2 mm Friction: 0.65 ± 0.15 N Rod end spherical radius: 25 ± 1.0 mm Spring stiffness: 785.0 ± 40.0 N/m Design and construction Built to withstand rigorous use while delivering consistent performance in concrete testing Optimized dimensions and tolerances to ensure precise interaction with test surfaces User friendly features Unhooking position marked at scale 100 for clear reference Easytoread scale enhances usability and reduces reading errors Use scenarios Onsite assessment of concrete hardness in structural slabs to verify compliance with project specs Quality control in concrete production lines to monitor batch consistency and early detection of curing issues Evaluation of precast concrete elements to confirm material performance before deployment Notes This device is a ZC3A Silver Rebound Hammer designed for concrete hardness testing with the specified parameters and design features It is intended for professional use in environments requiring accurate and repeatable rebound measurements