What does k=2 mean on your calibration certificate?

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If you've received a calibration certificate from Mensor, you may have noticed this statement: “The combined and expanded uncertainty is reported at k=2 providing an approximate 95% confidence level.” But what exactly does that mean?

Mensor's Metrologist, Philip Romero, is here to show you.
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K2 is Karakoram Range in northern Kashmi.The second highest peak in the world🌏

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