Controlled bolt tightening in the most common range of 20-100 N-m / 15-75 lbf-ft (guide value bolts M7-10.9 to M24-8.8, M30-5.6). Adjustable, releasing and robust pipe torque spanner with integrated ratchet and square drive for industry and trade. Classified according to DIN EN ISO 6789:2003 Type II Class A, with a traceable works certificate. Calibrated to a permissible deviation of +/- 3% and better. The specification of the standard (+/- 4%) is exceeded for your safety. For controlled right and left hand tightening. 1/2" lever-operated ratchet with push-button release and ball lock. Robust, satin chrome-plated tubular steel construction, with chrome-plated ratchet and high-quality plastic parts. Ergonomically shaped, 2-component plastic handle with calibration aid. Switchover 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 for setting intermediate scale values. Release system generates a tactile and audible release. Ergonomic system for torque adjustment with indicator symbol. Possibility of quick adjustment with offset screwdriver, not included in scope of delivery. Patent pending. Secured adjustment system. Release system generates a clear audible trigger signal.