Norme ASTM A0997-07
1.1 This practice covers the acceptance criteria for surface inspection of investment castings by visual examination.
1.2 The values stated in SI units are to be regarded as the standard.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.