Yamamoto Test Block Features :
- Full range of testing on regular, superficial and special purpose blocks
- Yamamoto hardness test blocks have lesser variation than other hardness blocks as low as +0.1 HRC in the HRC 60 range.
- Higher precision for calibration with precision hardness tolerance which are applicable for Rockwell (ASTM E-18), Brinell (ASTM E-10) and Vickers (ASTM E-384)
- Specific models are delivered with traceable certificate to NIST
- All Yamamoto test block are calibrated in accordance with ASTM E18-00 section C using NIST Rockwell HRC standard reference material
