Practical handle for transmission of the required torques without problems. Easy to read micrometer scale, protected against dirt. Lock at the end of the handle against inadvertent adjustment. Interchangeable blade to take 1/4 inch bits included.
On reaching the set torque value, the screwdriver can be felt and heard to trigger and is then again immediately ready for use.
For controlled tightening of screws to a pre-set torque.
Tested to DIN EN ISO 6789.
All Wiha interchangeable blades (No. 659940 − 659946) can also be used in the Holex torque screwdriver No. 659945.
The guaranteed measuring accuracy of the torque is achieved only once the torque range has been calibrated to DIN EN ISO 6789.