scope:

Objective

The objective of this Standard is to ensure correctness and acceptability of dimensional measurements.

Requirements

This Standard specifies requirements for preparation and approval of dimensional measurement plans and for the use of approved plans in making dimensional measurements.

Applicability

This Standard considers that a dimensional measurement method is acceptable if its associated measurement uncertainty per the reference in Section 3 (ANSI/NCSL Standard for Expressing Uncertainty) meets business needs, e.g., cost of measurements, consequences of pass and fail errors, liability, specific policies, and customer requirements. In assessing the acceptability of an uncertainty, management should take into account the importance and difficulty of accurately quantifying uncertainty.

Purpose

This Standard is intended for use by process and quality control engineers (dimensional measurement planners) in planning manufacturing-related dimensional measurements.