Concrete Test Hammer Type NR - Schmidt

Concrete Test Hammer Type NR - Schmidt
to BS1881, EN12504 part 2:2001
CodeCN655
British StandardBS1881-202
Other StandardsEN12504-2
Weight (kg)2.9
Tariff902480 90
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Measuring range 10 to 70 N/mm2 compressive strength.
Rebound values are recorded as a bar chart on a paper strip.
One roll of paper strip offers room for 4000 test impacts.

Case Dimensions: 325 x 295 x 105mm
Weight: 2.9kg

Test Procedure

(Similar for all types)
Smooth test area with a grinding stone.
Perform test series of at least ten test impacts.
The compressive strength of the concrete is read from a conversion chart.


The recording strip is used as a test document. Mean rebound value R may be visually estimated.