Durable mechanism with over 100,000 cycles within accuracy Fast scale adjustment reducing the effort required to adjust TIMESTRIP visual indication that the wrench is due for re-calibration and has 3, 6, 9 and 12-month graduations Large dual scale in N·m/ft.lb (15 and 25 N·m wrench sizes in N·m/in.lb) Range covering from 3 and 400 N·m/27 in.lb - 300 ft.lb torque values Can be used clockwise or anticlockwise by turning the wrench over Accurate to ±3% of reading which exceeds the requirements of ISO6789-1:2017 Clicking system triggers a tactile and audible signal 9x12 and 14x18 rectangular female interchangeable heads allowing CW and ACW operations Handle centre or calibration force point marked on handle Lock/unlock knob with blue ring inside to warn the operator the wrench is unlocked In a semi-transparent square tube with eurohole hanger All wrenches come with a factory declaration of conformity traceable to international standards ISO 6789 Made in the UK