State of the Art
DKD-R 3-7
Static calibration of indicating torque wrenches
This standard applies to the calibration of torque transfer wrenches used as transfer standards for the calibration of torque wrench calibration devices, as well as to torque wrenches with a higher accuracy than those classified according to DIN ISO 6789. It describes a method for the classification of these devices and for determining their relative expanded measurement uncertainty.