?????????? i really don't understand what you're saying here. There is a lock collar on your wrench , it's the black ring just below the numbers. Unlock, set value , lock ,use. Also torque in stages. Using correct sequence go around at 10 ft-lb, then 15, then 20 ft-lb. Heat cycle or two ,re-torque in sequence. Also other poster was correct that 1 ft-lb = 12 in-lb , therefore 20 ft-lb = 240 in-lb. Newto -meters is the metric scale of torque values. Clymers calls for 28 N-M for head nuts. Hope our info helps .