Controlled screw tightening in the most widely used range, Release system triggers a tactile and audible signal, Scale with Nm division, Classified according to DIN EN ISO 6789-2:2017 Type II Class A, incl. traceable test certificate, calibrated to a maximum permissible deviation of +/- 3 % and thus more precise than the +/- 4 % required by the standard, Recalibration without destroying the insulation, Fine toothed ratchet with square drive as per DIN 3120, ISO 1174, Safety button to protect against accidental release of the insert, VDE insulation up to 1000 V, acc. to EN 60900/IEC 60900