Every test or measurement result is just about as good as its most inaccurate link.
For that reason TÜV Austria pays special attention to the calibration and inspection of testing devices according to the standards ISO 9000 or EN 45000 within quality management systems.
This inspection guarantees that measurement results give an account of the real value with a defined probability of deviation. Therefore all testing devices must be calibrated in certain intervals to be able to determine national and/or international normals and quantity uncertainties in measurement.