Which tool is considered proper for making a hole through a transit panel?

The proper tool for making a hole through a transit panel is a twist drill. This tool is specifically designed for drilling holes in a variety of materials, including metal and wood, which makes it versatile for different applications. A twist drill creates clean, precise holes, which is essential when working on transit panels, as these may require exact specifications for hardware or routing cables.

Using a twist drill allows for controlled drilling, minimizing damage to the material surrounding the hole. It also comes in various sizes, accommodating the need for different hole diameters based on the specific requirements of the task. This precision is especially crucial in transit environments, where safety and performance are top priorities.

In contrast, while a hole saw is also a tool for making holes, it is generally used for larger diameters and might not provide the finesse required in all scenarios. A chisel is not suitable for making clean, round holes and is typically used for cutting or shaping materials. A rotary hammer is designed for heavier-duty applications, often involving concrete or masonry, and would not be appropriate for delicate tasks involving transit panels.