Which of the following is NOT typically used in plumbing applications?

The selection of the hammer drill as the correct answer is based on the specific tools typically used in plumbing applications. In plumbing, most tasks involve cutting, fitting, and leveling pipes and fixtures, where specialized tools like tube cutters, circular saws, and torpedo levels are more common.

A tube cutter is essential for cleanly cutting pipes, ensuring that they fit properly during installation or repairs. A circular saw may be used for larger, rough cuts in various materials, including wood or certain kinds of plastic pipes, making it relevant in plumbing work. A torpedo level is crucial for ensuring that pipes and fixtures are installed level and plumb, which is critical in maintaining proper function.

In contrast, a hammer drill is generally used for drilling into hard materials such as concrete or masonry, which is more relevant to construction and renovation work rather than plumbing specifically. Therefore, while a hammer drill can occasionally be used in plumbing tasks, it is not a standard tool associated with plumbing tasks, making it the option that is not typically used in the plumbing field.