The fourth edition of this handbook includes:
¿ Additions to the 2025 BoK, such as basic geometry calculations and how to recognize measurement results with adjustments to calibration equipment
¿ Inspection error identi cation as well as a discussion of corrective
and preventive action
¿ A revised and expanded chapter on statistical process control (SPC), with
equations and examples to ensure a full understanding of the material
¿ A new appendix with cumulative standard normal distribution table
