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Accuracy and resolution are two different beasts..
Accuracy means how far away you are from REAL value (compared to etalon or standard).
There is a third parameter which should be listed but is not, and that is repeatability of reading, because people mix it with accuracy.
Basically, if repeatability is good (that means, always the same reading whenever you measure the same thing) it can be calibrated if you have a standard.. then accuracy becomes the same as resolution
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