Which of the following is NOT a type of torque wrench?

The reason a hydraulic wrench is not considered a type of torque wrench is that it is primarily designed for applying high torque levels in heavy equipment applications, using hydraulic power for the operation rather than providing precise torque measurement. Hydraulic wrenches are typically used in industrial settings and can deliver a very high amount of torque, but they are not calibrated to indicate or measure torque levels accurately in the way that torque wrenches do.

In contrast, the other types listed, such as the preset ratchet, dial indicator, and bending beam, are designed specifically to measure and apply torque in a controlled manner. A preset ratchet torque wrench allows the user to set the desired torque level before use, giving feedback when the torque setting is achieved. A dial indicator provides visual feedback with a dial gauge, showing the user the applied torque in real-time. The bending beam torque wrench uses a beam that bends under a specific torque load, providing a reading based on the amount of flex. Each of these types focuses on delivering accurate torque application and measurement, distinguishing them from hydraulic wrenches that do not serve this precision-focused purpose.