What To Do When Measurement Methods Produce Different Answers
What are you looking to measure? This is one of the central questions for a metrologist (a measurement scientist) and is usually answered before measurements can proceed. It is impossible to make sense of the results without knowing the measurand—the actual physical dimension or other property of the sample you want to measure regardless of the method you use.
However, the measurand could be hard to obtain if it is not defined properly or if multiple instruments are involved.
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