Concrete Rebound Hammer, Compressive Strength Tester, Hardness Measurement
Compressive Strength: 10–60 MPa. Compressive strength: 20–110 MPa. Compressive strength: 60–90 MPa. Application range: Normal concrete, high-strength concrete. Impact Tension Spring Stiffness: 785.0 ± 30.0 N/m.