How do you know that you reached the correct torque when using a micrometer torque wrench?

• A. The correct torque is applied when the wrench breaks
• B. The wrench clicks
• C. The display shows the value
• D. The scale deflects to the number

Answer: (A)

Setting and signaling the torque value with a micrometer torque wrench relies on a mechanical release. You dial in the target torque on the micrometer scale, then apply force to the fastener. As soon as the preset torque is reached, the tool releases and breaks, signaling that the correct torque has been obtained. You stop applying force at that moment to avoid overshoot. This is why the break is the correct indicator for this style of wrench. Other signaling methods—like a click on some wrenches, a digital readout, or watching a scale move to a number—belong to different wrench designs, not to a micrometer torque wrench.