Magtrol torque calibration laboratory consists of 3 lever calibration benches covering a range from 0.1 Nm to 5,000 Nm as well as a motorized geared bench covering a range 1,000 Nm to 50,000 Nm. The measurement uncertainties of calibration rigs are at 0.01% level of the rated torque range. The laboratory was designed and built to meet the metrological requirements, avoiding floor vibration and temperature fluctuations that could disturb the measurements.