How does your dynamometer wrench knows when to stop without having a chip #automotive #mechanical

3-Second Blueprint (English)

1. Inside a click-type torque wrench, a calibrated coil spring and plunger press a small steel block square against the ratcheting head lever.
2. When applied handle force reaches target torque, the block tilts and lets the lever strike the wrench tube with an audible, tactile click.
3. Twisting the handle compresses the spring to raise the threshold, and users must stop at the first click since drive never auto-disengages.