Expert Quality, with reversible ratchet head and locking preset action. Torque values are viewed via a window in the handle. Range 30 - 100Nm, accuracy ±4%. Overall length 420mm. Full instruction manual and calibration certificate included with each torque wrench. Clockwise right - hand thread torque application only. Supplied in blow mould case. Manufactured and calibrated to ISO6789-1992-12-01 Standard