ST/PC N/L type: the world's advanced rebound tester with unparalleled discreteness, durability, and measurement range. The independent verification test of BAM in Germany shows that SilverSchmidt's measurement principle has lower discreteness than traditional rebound meters in the overall range. Its inherent impact angle independence * eliminates the possibility of user operational errors. Automatic evaluation will be based on predefined statistical standards and utilize software analysis tools, greatly enhancing the application of uniformity assessment. All major standards recommend setting a mixture specific curve. User defined correlation curves can be downloaded to the rebound tester through the powerful Hammerlink software (PC version only). This function, combined with modifications to the shape factor and carbonation effect, can evaluate compressive strength. The SilverSchmidt PC L-type rebound tester combined with a mushroom shaped impact rod can measure a range as low as approximately 5 MPa (725 psi). Combined with SilverSchmidt's inherent angular independence, it becomes a tool for determining when to remove templates and other applications from the tunnel lining.