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Standard : ASTM D5873 - ISRM 1981Used to measure the rebound index on rock cores and samples. The device is simple, easy to use, and is similar to the one used for testing concrete. The level of impact energy only is different: 0.74 Nm. Rock cores are positioned horizontally and the rebound index is obtained from the average of several measurements..

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Standard : EN 12504-2Made of special steel with guide for routine checks on concrete test hammers.Dimensions: 215 x 215 x 270 (h) mm. Weight: 17 kg...

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