Rockwell hardness test reference block

Blocks certified in accordance with EN ISO 6508 and ASTM E18. Available in the following scales: HRA – HRB – HRC – HR15N – HR30N – HR45N – HR15T – HR30T – HR45T – HRD – HRE – HRF – HRG – HRH – HRK – HRL – HRM – HRP – HRR – HRS – HRV – HR15W – HR30W – HR45W – HR15X – HR30X – HR45X – HR15Y – HR30Y – HR45Y.