By help of the quick-center device the test stamp HPE II L is placed in the centre of the prescribed measuring area of the steering wheel. The load is applied by a weight which is fixed at the measuring frame.
After the expiration of measuring time the measured value is read in the displays of the HPE II L and data logger and stored.
When a measuring instrument is being calibrated, the given deviation is determined by various measurements versus standard references. A calibration certificate is then issued indicating the measuring results and the corresponding measurement uncertainties and the instrument is marked as calibrated.
All documents together with the calibration certificate provide traceability of national standards.