Product Reviews - June 26, 2014
Electronic or Digital torque wrenches have a digital readout screen which allows the user to program the torque limit. A strain gauge which is attached to a torsion rod sends a signal to a transducer to determine the force of torque per unit, which is then displayed via the LED reading.
The LED lights will notify the user when they are approaching a desired torque setting and when the torque setting has been reached along with an audible alert signal. Some models also have an internal computer chip which allows torque measurements to be saved and then downloaded to a database for record keeping. This is also beneficial for any auditing requirements. Electronic or Digital wrenches have come down in price over the last few years and are now much more affordable and accessible for most automotive mechanics.
However, many users find that the new Torque and Angle wrenches do exactly the same function with the added benefit of angle readout for torque to yield applications.