HB 4496-1990
General rule of measuring instrument product quality classifications (English Version)

Standard No.

HB 4496-1990

Language

Chinese, Available in English version

Release Date

1990

Published By

Professional Standard - Aviation

Latest

HB 4496-1990

Scope

This standard stipulates the grading principles, defect classification, sampling plan, testing regulations and quality grade assessment methods for measuring tool product quality. See Appendix A (Supplement) for the cleanliness measurement operation method. This standard is applicable to the assessment of the quality level of mass-produced measuring tools.

HB 4496-1990 history

• 1990 HB 4496-1990 General rule of measuring instrument product quality classifications