STANDARDS: EN 12504-2, 13791; ASTM C 805; BS 1881:202

The Concrete Test Hammers are the most widely used portable NDT measuring instruments for a rapid assessment of the condition of a concrete structure.


The classic Original Schmidt Hammer that became the basis of every major rebound hammer testing standard worldwide. Includes the NR and LR versions to record the rebound values directly on registration paper.

Type N/L: The benchmark against which all rebound hammers are compared and the basis of every international rebound hammer standard. Available with different impact energies allowing customers to test a wide variety of materials and types of structure.

Type NR/LR: Ever popular version with impact values recorded as a bar chart on registration paper for ease of control. Greatly simplifies the calculation of the rebound value and in checking the uniformity of the object under test. One roll of paper can record up to 4’000 impacts.

Original Schmidt Hammers are supplied with Impact Device, Carrying Case, Grinding Stone, Operating Instructions and Calibration Certificate.

Type NR and LR additionally with 3 rolls of registration paper.


The SilverSchmidt is a unique integrated concrete test hammer featuring true rebound value calculated from the quotient of the impact velocity and rebound velocity to provide maximum accuracy.

ST: Standard model. Hammerlink software provided for performing firmware upgrades and selecting statistics presets only. Useful memory limited to the last 20 series.

PC: Full Hammerlink software functionality. Extended memory usage. Download to PC. User defined custom curves.

Type N: Standard impact energy. Test object should have minimum thickness of 100 mm (3.9”) and be firmly fixed in the structure.

Type L: Low impact energy. Suitable for brittle objects or structures less than 100 mm (3.9”) thick. 

Intuitive User Interface

The language independent user interface is simple to use and provides all of the functionality necessary for a rapid assessment of the structure. Practically every command can be activated either directly or in two consecutive steps.

Data Acquisition and Processing

Pre-programmed statistical methods in accordance with all of the major standards assures an error free, rapid determination of the rebound value.

Reduced dispersion and direct conversion to compressive strength based on validated curves, regional curves or user defined curves bring improved accuracy to compressive strength estimates.
All data is automatically saved and the last 20 series may be reviewed in the data list. Hammerlink – Data Analysis made simple
The Windows based software Hammerlink unlocks the full capabilities of the SilverSchmidt PC version, making it an even more
powerful instrument for structural assessment.

Hammerlink features:

Extended memory usage
Rapid uniformity testing with the summary view
User defined conversion curves (polynomial and exponential)
User defined statistical methods
Export to third party software

Extending the range to fresh Concrete

The mushroom plunger in combination with the SilverSchmidt PC Type L hammer extends the lower measuring range down to approximately 5 MPa (725 psi).
This coupled with the SilverSchmidt’s inherent angle independency makes it the perfect tool for early strength applications such as determining when to remove formwork in tunnel linings.
SilverSchmidt Hammers are supplied with Impact device, carrying case, grinding stone, operating instructions and calibration certificate.
The Schmidt Concrete Test Hammers can be applied on all concrete structures such as bridges, buildings, retaining walls, barrages and many more. But they are also the perfect instruments to test in tunnels (e.g. the formwork stripping strength which is the concrete compressive strength fc to be achieved before removal of the formwork).