Which of the following is NOT a common type of torque tool?

The correct response highlights that analog torque tools are less common compared to the others listed. Torque tools are essential in aerospace assembly for applying a specific amount of torque to fasteners, ensuring structural integrity and safety.

Digital torque tools are widely used due to their precision and ease of reading, often featuring electronic displays that help in achieving the correct torque values quickly and accurately. Pneumatic torque tools are also prevalent, particularly in high-volume or production environments, as they allow for rapid application of torque via compressed air, which can enhance efficiency in assembly lines. Electric torque tools have gained popularity as well, offering the benefits of portability and programmable settings for various torque requirements.

In contrast, while analog torque tools, which rely on analog dials or scales, do exist, they are less favored in modern applications due to their limitations in precision and the potential for human error in reading measurements. Therefore, analog tools are not as commonly utilized in comparison to their digital, pneumatic, and electric counterparts.