Mittausalusta

Mittausalusta is a base or platform used in measurement practice to support and position artefacts, equipment, or sensors during calibration and measurement tasks. It provides a stable, known reference plane or surface against which measurements are made, contributing to accuracy, repeatability, and traceability in metrology.

Typically made from materials with low thermal expansion and high rigidity, such as granite or special alloys. The surface is usually ground or lapped to a specified flatness grade. The choice of mittausalusta depends on the measurement task, artefact size, and environmental conditions.

Common applications include calibration of instruments, setup for coordinate measuring machines, optical measurement setups, and quality control in manufacturing. The platform is often used with fixtures, clamps, or stops to hold items without distortion.

Quality control and calibration practices aim for metrological traceability, linking measurements to national or international standards. This involves regular verification of flatness, levelness, and temperature effects, and the maintenance of calibration certificates.

In Finnish industrial and laboratory contexts, mittausalusta denotes the measurement base used to ensure stable, repeatable measurements and to support traceable calibration workflows.