Starr-Chek also provides a full range of certified diamond and ball indenters to accommodate each scale of Rockwell hardness testing. Rockwell calibration test block sets are also available for ultimate accuracy and performance in tester verification. Calibration sets provide the user the assurance that your hardness tester is accurate throughout the entire testing scale. For all other indenters please call 651.230.5978 for more info.


  • Calibrated to ASTM E18, ANSI, ISO/IEC 17025
  • Highest quality steel, brass and aluminum
  • Rockwell and Brinell Test Blocks are certified in our ISO/IEC 17025 accredited laboratory
  •  NIST traceable long form certificate with every Rockwell test block

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Hardness Tester Accessories and Anvils please Contact Us for info.