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A comment on FAA issues emergency directive on 2,000 Boeing 737 NG, Classic planes. Parent comment

Re:FAA issues emergency directive on 2,000 Boeing 737 NG, Cl... by ryandrake on Friday July 24, 2020 @03:19PM (#23943407)
Yea, they are both capable of doing the same job, but one comes with a $104.01 piece of paper that proves that a clerk in an office stamped another piece of paper and filed it away in a cabinet, which makes it legal to use with a certified airplane.
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Re:FAA issues emergency directive on 2,000 Boeing 737 NG, Cl... by SAI_Peregrinus on Friday July 24, 2020 @04:07PM (#23943875)
You can take just about any measuring tool to a calibration company and get the certificate. Indeed, you MUST do this on a regular basis: calibration is a set of measurements of a system over time. Single-point-in-time calibration is worthless for showing drift. You can also get things tested at a range of temperature and humidity levels, high-grade lab standards may get calibrated at multiple temperature & humidity levels every 6 months.
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