... TESTER AL-150R Product Information :Rebound Tester also called Concrete Test Hammer,Elasticity Tester.1. Normal impact energy: 2.207J2. ... products), flexible, inexpensive, power-free, easy to master; the button applies stretching technics and is not easy to fall off ... a thickness from 50 to 100mm) Technical data: Concrete Test HammerModel N Model LImpact energy 2,207Nm0,735NmMeasuring range10 to ...