Controlled screw tightening in the most common range of 20-100 N·m / 15-75 lbf·ft (reference for screws M7-10.9 to M24-8.8, M30-5.6). Adjustable, releasing, and robust pipe torque wrench with a 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. Robust, satin-chromed steel tube construction, with phosphated square drive (16 mm) 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. The release system produces a tactile and audible release signal. Ergonomic system for torque adjustment with indicator symbol. Quick adjustment possible with a torque screwdriver, not included in delivery. Secured adjustment calibration system. Factory calibration square drive: 32 mm (16 mm). Operation only with plug-in tools with uniform square drive - otherwise, value shifts may occur. Depending on the tool used, work can be done either forward (e.g., plug-in open-end wrench) or sideways (e.g., ratchet and socket insert). Patent pending.