Which tool marks the starting holes in metal?

Which tool marks the starting holes in metal?

• A. Center punch.
• B. Thickness gauge.
• C. Torque wrench.
• D. Pressure gauge.

Answer: (A)

A center punch is used to mark the starting point for drilling on metal by creating a small indentation. This indentation gives the drill bit a point of reference, so the bit doesn’t wander when you begin cutting into the metal. The hammer strike leaves a precise dimple that guides the drill and helps you start the hole exactly where you want. Other tools serve different purposes: a thickness gauge measures how thick the material is, a torque wrench applies a specific tightness to fasteners, and a pressure gauge monitors system pressure. They won’t create the mark needed to start a hole.

A center punch is used to mark the starting point for drilling on metal by creating a small indentation. This indentation gives the drill bit a point of reference, so the bit doesn’t wander when you begin cutting into the metal. The hammer strike leaves a precise dimple that guides the drill and helps you start the hole exactly where you want. Other tools serve different purposes: a thickness gauge measures how thick the material is, a torque wrench applies a specific tightness to fasteners, and a pressure gauge monitors system pressure. They won’t create the mark needed to start a hole.