Use: Controlled screw tightening in the most common range of 10 - 50 N·m / 7,5 - 37 lbf·ft, Adjustable, releasing and sturdy tubular torque wrench with integrated ratchet and with square drive for industry and the trades, Features: Classified as per DIN EN ISO 6789-2:2017 Type II Class A, adjusted to a maximum permissible +/-3% deviation and thus with a greater precision than the standard-stipulated +/-4%, incl. traceable test certificate (DIN EN ISO 6789-2:2017), For controlled bi-directional tightening, 1/2" mushroom head square with ball lock. From 3/4" with square socket and pin retention, Robust, matt powder-coated tubular steel construction, with galvanized ratchet and high-quality plastic parts, New ergonomic handle, shaped according to the natural grip position of the hand, clearly recognisable and tactile hand centring aid and calibration aid in the middle of the handle, Double scale N·m / lbf·ft and vernier are protected from abrasion and contamination by an enlarged viewing window, With vernier scale for N-m main scale for setting intermediate scale values, lbf-ft setting only via main scale, Vertical alignment of the scale, torque adjustment therefore suitable for left and right handers, Scale line positioned directly above the scale prevents reading errors (parallax errors), Unit labeling integrated in the scale frame and also protected by viewing windows,, Precise mechanism generates a clearly perceptible and audible trigger signal when the set torque value is reached, incl. roll away protection, prevents rolling away when the tool is put down