The TB is a small torque wrench with a fixed head. ... When the TB torque wrench achieves torque, the head breaks-over signaling to the operator to stop applying torque to the fastener or bolt. Break-over torque wrenches improve control of the fastening process by reducing the risk of both over and under tightening.
What is a break over wrench?
Break-Over Wrench with Interchangeable Heads. A preset production torque wrench with flexibility to adapt to different applications with ability to change different head options. Breaks over upon reaching preset torque and reset automatically.
Is it bad to use torque wrench as breaker bar?
Never use your torque wrench as a breaker bar—that'll damage the torque mechanism. Carry it with kid gloves—a single fall can knock the accuracy off by as much as 30 percent. If you do drop it, get it recalibrated (calibration firms listed below) before using it again.