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| articles:nist_traceability [2019/11/20 07:38] – [An "unbroken chain of calibrations" to what?] rrandall | articles:nist_traceability [2019/11/20 07:48] – [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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| + | And [[https:// | ||
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| + | <WRAP center round box 80%> | ||
| + | **FAA National Policy - Order 6200.4G** \\ | ||
| + | Appendix 2 - Definitions \\ | ||
| + | h. Calibration Standard - a device or instrument used as a basis to calibrate measure, gage, test, inspect, or otherwise examine basic accuracy values. The standard has a higher order of accuracy than the examined item and is __traceable to the National Institute of Standards and Technology (NIST)__.</ | ||
| 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:\\ | ||
