>>>> You must enter 3 of the 4 values. Press Calculate button for the 4th value.<<<<
 Torque Wrench Length    -----------Inches-----------    Extension Length     
 1)               2)            
                                                                   
 3)        Torque Applied                                      
       Inch/Lbs.                    Foot/Lbs.
 4)    Torque Wrench Setting                 
       Inch/Lbs.                    Foot/Lbs.