concrete test hammer rebound hammer

Technical Specification:

1 Pointer Length(mm) 20.0 ±0.2

2 Pointer Friction(N) 0.65 ±0.15

3 Top Sphere Radius of Rebound Shaft(mm) SR25.0 ±0.1

4 Rebound Spring Rigid Degree(N/M) 785.0 ±40.0

5 Rebound Spring Working Length(mm) 61.5 ±0.3

6 Rebound Hammer Impact Length(mm) 75.0 ±0.3

7 Rebound Hammer Starting Point 0 of the scale +1

8 Average Value of Steel Anvil Rate 80.0 ±2

9 Rebound Hammer, Rebound Shaft Working Rigid (HRc) 61.0 ±2