Controlled torque wrench in the most common range of 110-550 N·m / 80-405 lbf·ft (reference for screws M7-10.9 to M24-8.8, M30-5.6). Adjustable, releasing, and robust pipe torque wrench with integrated ratchet and square drive for industrial and craft use. Classified according to DIN EN ISO 6789:2003 Type II Class A, with a traceable factory certificate. Calibrated to an allowable deviation of +/- 3% or better. The standard requirement (+/- 4%) is exceeded for your safety. For controlled right and left tightening. 3/4" through square with pin lock. Robust, satin-chromed steel tube construction, with a chrome ratchet and high-quality plastic parts. Ergonomically shaped, 2-component plastic handle with calibration aid. Switching between main scale N·m and secondary scale lbf·ft to avoid reading errors when setting the desired torque. With micrometer scale for N·m main scale to set intermediate scale values. Release system generates a tactile and audible release signal. Ergonomic system for torque adjustment with indicator symbol. Quick adjustment possible with angle screwdriver, not included. Secured adjustment calibration system. Patent pending.