Use: • Controlled screw tightening in the most common range of 20 - 400 N·m / 15 - 300 lbf·ft (guide for screws M7-10.9 to M20-6.9) • Adjustable, releasing and sturdy tubular torque wrench with rectangular cavity for industry and the trades Features: • Classified to DIN EN ISO 6789:2003 Type II Class A, with a factory certificate allowing for operations to be traced back. Calibrated to a permitted +/- 3 % deviation and better. The specifications of the standard (+/- 4 %) are exceeded. • For controlled bi-directional tightening • Sturdy, varnished tubular steel construction, with zinc-plated rectangular cavity (9x12 mm or 14x18mm) and high-grade plastic parts • Ergonomically shaped plastic grip with calibration aid • Change-over between N·m main scale and lbf·ft ancillary scale to avoid reading errors when setting the torque wanted. • With micrometre scale for main N·m scale for setting interim values • Release system triggers a tactile and audible signal • Ergonomic system for torque adjustment with reference symbol • Provision for rapid setting with hexagon allen key, not included • Secured adjusting/setting system • Factory depth gauge: 17.5 mm (9x12 mm) or 25 mm (14x18 mm) • Operation only with end fittings with standardised depth gauges, otherwise inaccuracies can arise • Depending on the application, access is possible from the front (e.g. open-end fitting) or side (e.g. reversible ratchet and socket)