Concrete Strength Test, Brand: LANGRY Model: RH225-A Country of Origin: China Product Specifications   The Langry RH225-A Rebound Concrete Test Hammer (also known as Schmidt hammer or sclerometer) is a mechanical, analog non-destructive testing (NDT) device designed for quick on-site estimation of compressive strength in ordinary concrete structures (10–70 MPa range). Manufactured by Jinan Langry Detection…