... AL-150R Product Information :Rebound Tester also called Concrete Test Hammer,Elasticity Tester.1. Normal impact energy: 2.207J2 ... 2/3 forces compared with counterpart products), flexible, inexpensive, power-free, easy to master; the button applies stretching technics and ... thickness from 50 to 100mm) Technical data: Concrete Test HammerModel N Model LImpact energy 2,207Nm0,735NmMeasuring range10 ...