How can you tell you've reached the desired torque with a torque wrench?

Reaching the desired torque with a torque wrench is primarily indicated by an audible and tactile signal. When you are using a click-type torque wrench, once the pre-set torque value is achieved, the mechanism inside the wrench activates, causing the handle to "break" or release slightly. This is often accompanied by a clicking sound. This feature is designed to ensure that the technician applies the correct amount of force without exceeding the specified torque, which is essential in maintaining the integrity of the connection being tightened.

The clicking mechanism allows for precise control and helps avoid overtightening, which can lead to damage or failure of components. This feature is crucial in applications where the correct torque is vital for safety and functionality, such as in aviation maintenance. In contrast, other methods, such as visual indicators or vibrations, are less common for standard torque wrenches.