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Verification procedures for metal Rockwell hardness testers (A, B, C, D, E, F, H, K, N, T scales) JJG 112, Standard test methods for Rockwell hardness of metallic materials (Appendix A1 Verification of Rockwell hardness testing equipment) ASTM E18, Rockwell hardness test - Verification and calibration of testing machines and indenters JIS B 7726, Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters ISO 6508-2 Structure

Verification procedures for metal Rockwell hardness testers (A, B, C, D, E, F, H, K, N, T scales) JJG 112, Standard test methods for Rockwell hardness of metallic materials (Appendix A1 Verification of Rockwell hardness testing equipment) ASTM E18, Rockwell hardness test - Verification and calibration of testing machines and indenters JIS B 7726, Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters ISO 6508-2

Verification procedures for metal Rockwell hardness testers (A, B, C, D, E, F, H, K, N, T scales) JJG 112, Standard test methods for Rockwell hardness of metallic materials (Appendix A1 Verification of Rockwell hardness testing equipment) ASTM E18, Rockwell hardness test - Verification and calibration of testing machines and indenters JIS B 7726, Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters ISO 6508-2 Supplier

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