Elcometer 151 [W181----1] Mechanical Concrete "Rebound" Test Hammer | MPa / PSI Scale

The Elcometer 181 Mechanical Concrete Test Hammer is a simple to use gauge which provides an estimate of the strength and quality of concrete. Formerly, masons and construction workers used to check the set and state of concrete by striking the surface with a hammer. They assessed very roughly the set and resistance of the concrete by the nature of the metallic sound produced and of the rebound. The Elcometer 181 replaces this unreliable method of testing with a hand held tool which gives quantifiable and reproducible test results.

Your Elcometer 181 Mechanical Concrete Test Hammer consists of a spring loaded mass which, when released, causes a plunger to impact the concrete surface with fixed and constant energy. During the rebound stroke, the mass moves a pointer along a scale on the body of the test hammer. This scale is marked in units of rebound number. Charts on the body of the test hammer allow the rebound number to be converted into the compression strength of the concrete.