Negara Asal: Swiss Hammer Test Proceq : ORIGINAL SCHMIDT The H-2975, Type N Hammer is designed for testing concrete items 4 ” ( 100mm) or more in thickness, or concrete with a maximum particle size less than or equal to 32mm) .It is designed for testing concrete within a compressive strength range of 1, 450 to psi ( 10 to 70 N/ mm and Impact energy of the test is 1.6 ft-lbs ( 2.207 Nm) The standard ( Type N) hammer displays rebound values on a mechanical sliding scale. These values can then be correlated to compressive strength by using the conversion table chart affixed to the hammer....