mittaustarkka

Mittaustarkka is a Finnish adjective used to describe the reliability of a measurement result or the capability of a measuring instrument in terms of how close the result is to the true value, taking into account the stated measurement uncertainty. The term is widely used in metrology, engineering, and quality control.

In metrology, accuracy is the closeness of agreement between a measured value and a true value; precision denotes the repeatability of measurements under the same conditions. A measurement can be precise but biased if it consistently deviates from the true value. The combined concept of reliability includes accuracy, precision, resolution, stability, and uncertainty. Measurements should be traceable to SI units through calibration against recognized standards. A mittaustarkka instrument has a well-established uncertainty budget and a documented calibration history.

In practice, Finnish manufacturers and laboratories specify mittaustarkkuutta as part of product datasheets or calibration certificates, for example tolerance ranges in manufacturing gauges or the measurement methods used in tests. The label is used to communicate the expected quality and reliability of measurements in technical contexts.

See also: metrology, measurement uncertainty, calibration, traceability, accuracy, precision.