The ISO 14253-1 standard has evolved to reflect advancements in metrology and industry needs. Understanding its history provides context for the current version, which remains the most widely adopted and referenced edition:
Understanding ISO 14253-1:2017 – Geometrical Product Specifications (GPS) and Decision Rules INTERNATIONAL STANDARD ISO 14253 1.pdf
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The standard establishes how to handle the "gray area" that occurs when a measurement is so close to a limit that uncertainty makes the final status (pass/fail) unclear. iTeh Standards Proving Conformity: The ISO 14253-1 standard has evolved to reflect
For a simple example, consider a shaft with a specified diameter of 50.0 mm ± 0.1 mm. The specification limits are 49.9 mm (LSL) and 50.1 mm (USL). A measurement returns a value of 50.08 mm with an expanded uncertainty of ±0.05 mm (k=2). The measurement uncertainty means the true value could be as low as 50.03 mm or as high as 50.13 mm. The specification limits are 49