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| articles:nist_traceability [2020/04/24 08:01] – [An "unbroken chain of calibrations" to what?] rrandall | articles:nist_traceability [2020/06/07 17:20] – [An "unbroken chain of calibrations" to what?] rrandall | ||
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| Sec. 820.72 Inspection, measuring, and test equipment. \\ | Sec. 820.72 Inspection, measuring, and test equipment. \\ | ||
| (b) (1) Calibration standards. Calibration standards used for inspection, measuring, and test equipment shall be __traceable to national or international standards__. If national or international standards are not practical or available, the manufacturer shall use an independent reproducible standard. If no applicable standard exists, the manufacturer shall establish and maintain an in-house standard.</ | (b) (1) Calibration standards. Calibration standards used for inspection, measuring, and test equipment shall be __traceable to national or international standards__. If national or international standards are not practical or available, the manufacturer shall use an independent reproducible standard. If no applicable standard exists, the manufacturer shall establish and maintain an in-house standard.</ | ||
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| + | Similar antiquated language appears in MIL-STD-1309D, | ||
| + | <WRAP center round box 80%> | ||
| + | 3.1.653 Traceability. The ability to relate individual measurement results to __national standards or nationally accepted measurement systems__ through an unbroken chain of comparisons. | ||
| + | </ | ||
| In contrast, ISO 17025:2017 is much more modern and technically correct in stating:\\ | In contrast, ISO 17025:2017 is much more modern and technically correct in stating:\\ | ||
