Draper expert 3 4 sq dr precision torque wrench 120 400nm draper expert 64673 b i expert quality i b with reversible ratchet head and locking preset action torque values are viewed via a window in the handle range 120 400nm accuracy 177 4 overall length 860mm full instruction manual and calibration certificate included with each torque wrench supplied in blow mould case br br b manufactured and calibrated to iso6789 1992 12 01 standard b br br draper expert 3 4 sq d