Hardness Tester  

石屎槍 | 石屎試力槍

HT-225A is a hardness tester or concrete test hammer, also called a concrete rebound hammer, Schmidt hammer or Swiss hammer, used for non-destructive measurements of surface hardness and compression strength. Suitable for use with concrete, rock and building materials, this manufacturer-calibrated manual rebound hammer is economical, practical and easy to use.