The strong construction of the wrench allows accurate results, +/- 4%, also under difficult working conditions.
The large turning angle increases precision, thus reducing the possibility of overloading the key, the key turning controller mechanism prevents the user from unbalancing the key. The operation of the torque: two directions, however it is necessary to proceed according to the specifications of the wrench that shows the correct direction of the torque and double scale in lbf.tm / NM