The Original Schmidt Hammer was invented and introduced into the market by Proceq in the 1950s. Since that time it has become the world’s most widely used rebound hammer for non-destructive concrete compressive strength estimation, standardized in every major region. Not limited to concrete, the rebound test is also used for rock, paper and mortar. Schmidt rebound hammers are available in models with different impact energies, each designed for a specific test application. The latest models are the Original Schmidt Live, a fully connected hammer operating on iOS and Android and the Silver Schmidt hammer, OS8200, combining the proven accuracy of Silver Schmidt with all of the time saving reporting advantages of the live environment.