Measurement Matters

2013

Measure for Measure: Careful Comparison

by Bucher, Jay L.

Starting a calibration program from the ground floor can be a daunting task. But it also can help an organization realize it has taken only the first steps in ensuring a quality program....


Measure for Measure: Are You Sure?

by Grachanen, Christopher L.

From a metrological purist perspective, measurement results reported with just an interval do not give sufficient information as to the uncertainty (unlikelihood) that the obtained results are within their stated interval....


Measure for Measure: Into the Unknown

by Shah, Dilip

For estimation of measurement uncertainty, both Type A and B uncertainty contributors may need to be considered, depending on the parameter that is being estimated....


Measure for Measure: Know Your Surroundings

by Grachanen, Christopher L.

Ambient conditions during tests and calibration activities can have a big influence on measurement results. Some of these influences affect the device being measured; some affect the measurement system; and some affect both....


Measure for Measure: Verifying the Art

by Niemann, Craig

Measurement may be considered a science and an art. It is a science in that it is based upon the laws of physics and math. Some consider it an art because elements of human judgment are needed to translate measurement from abstract to real application....


Measure for Measure: What If?

by Bucher, Jay L.

There are no requirements that call for traceable calibration to the National Institute of Standards and Technology or any other National Metrology Institute (NMI). Nor are there any requirements for other countries to be traceable to their NMIs....



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