Reference block for Rockwell hardness test 28.5 HR | HRA 28.5
WESTport
Features: • Calibrated to ASTM E18, ANSI (NCSL) Z540-1, (ISO) 10012-1, ISO/IEC 17025, ISO 6508 • Lifetime Guarantee • Highest quality steel, brass and aluminum • Test block surface hand lapped and diamond polished to a mirror finish • Superior accuracy and ease of testing for the operator • Special heat treat process insures maximum consistency and repeatability • Test Blocks certified in our ISO/IEC 17025 accredited laboratory • In stock for immediate delivery • Free NIST traceable long form certificate with every test block
