How can you be sure if your measurements are right? | Metrology Matters

When you measure something, how can you be sure that your measurement is accurate? Compare your measurement tool with a more accurate measuring tool! But how do you check if THAT tool is accurate? Compare with an even MORE accurate measuring tool! And check that one with an even higher accuracy tool, and...
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This is my new favorite channel 🙌🏼🙌🏼 Awesome job guys!!

[@allretroisfun9515]

The shop I work for we have no cmm machnlines just calipers , micrometers and weight gauge. So what would I use as a master calibration tool, gage blocks?

[@mscscambodia]

If you are using Gage Blocks you need to make sure they are a Grade 0 as these are what is needed to calibrate micrometers & calipers (ASME B89 standards) if you do not have a Master Gage checker.