<p><span><span><span>STD 645 is a sturdy bench-mounted instrument designed to meet the requirements of the rubber industry.</span></span></span></p>

<p><span><span><span>Rebound resilience (elasticity) facilitates a simple method of measuring damping properties and is commonly used in conjunction with hardness testing for basic quality control.</span></span></span></p>

<p><span><span><span>The sample is located against a polished anvil and secured by spring clips. Adjustment can be made to accommodate differences in sample thickness. The pendulum is released from a horizontal position and strikes the sample at a vertical point. Its rebound height is displayed digitally as a percentage of its distance from the horizontal start position.</span></span></span></p>
