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Offset is the difference between a nominal value (for an artifact) or a target value (for a process) and the actual measured value.
Formerly known as the National Conference of Standards Laboratories (NCSL). NCSL was formed in 1961 to “promote cooperative efforts for solving the common problems faced by measurement laboratories.
A natural constant is a fundamental value that is accepted by the scientific community as valid.
Metrology is the science and practice of measurement
