Adjustable torque screwdrivers in Inch Pounds or Newton Meters from Wiha allow you to precisely limit the amount of torque for any application. Both Nm and In/lbs have fixed,"TorqueFix", or adjustable torque settings called "TorqueVario". 

Find variable or fixed Inch pound handles 15 in/oz. to 70 in/lbs. Find Newton Meter and fixed torque handles  variable handles 0.1Nm to 8.0Nm

Pair with the correct torque blade or 1/4″ bit holder to properly fasten at a specific torque setting for your application.