mittaus

Mittaus is a Finnish noun meaning measurement or the act of measuring. It is derived from the verb mitata, to measure, and is used to denote the process of determining the size, amount, or extent of something through comparison with a standard or reference.

In broad use, mittaus covers a wide range of quantities, including length, mass, time, temperature, and various physical, chemical, or electrical properties. In science, engineering, industry, and daily life, measurements provide quantitative data that support decision making, quality control, research, health, and safety.

The systematic study surrounding measurements is known as metrologia (metrology). This field encompasses the definition of units, the development of measurement methods, and the evaluation of measurement accuracy and reliability. Measurements are typically expressed with a unit (often an SI unit) and an associated uncertainty, reflecting the limits of precision. Traceability connects a measurement result to international or national standards through a chain of calibrations and reference materials.

Measuring instruments range from simple tools like rulers and scales to sophisticated sensors, instruments, and complex systems. The measurement process includes selecting the appropriate instrument, performing calibration, collecting data, processing results, and reporting findings.

See also metrology, calibration, uncertainty, and standardization.