"Geometrical product specifications (GPS) — General concepts and requirements for GPS measuring equipment,"

These are characteristics that do not directly influence the measurement result but are important for functionality and durability, such as: (e.g., thermal expansion coefficient). Interface protocols . Wear resistance . 3. Calibration and Verification ISO 14978 provides strict guidance on:

Does your equipment’s manual include a statement like "Designed per ISO 14978" ? If not, the manufacturer may have failed to properly document MPE.

The difference in indication depending on the orientation of the movement (approaching from high or low). 2. Design Characteristics

ISO 14978 influences "chain links 5 and 6" of the GPS matrix, which deal with the requirements for the measurement process and the equipment itself. Without this standard, engineering drawings could be interpreted ambiguously, leading to costly errors in production. By following its guidelines, manufacturers can present their equipment specifications in a way that is statistically sound and universally understood, whether they are using proportional value measurement functions. ISO - International Organization for Standardization Conclusion