CSN 25 0270-1974
Verification of Rockwell superficial N and T scale hardness testing machines

Standard No.

CSN 25 0270-1974

Release Date

1974

Published By

CZ-CSN

Status

Withdraw

Replace By

CSN 25 0270-1985

Latest

CSN 25 0270-1985

CSN 25 0270-1974 history

• 1985 CSN 25 0270-1985 Rockwell hardness testing machines, scales N and I. Technical requirements. Methods of verification.
• 1974 CSN 25 0270-1974 Verification of Rockwell superficial N and T scale hardness testing machines