What are the functions of a center punch?

[MacLilah]

In bench work and mechanical drilling, marking lines is often required. To prevent the marked lines from being erased, small holes (indentations) are made at certain intervals along the lines as markers. The punch used to create these marks is called a center punch. Since these holes are made with a punch (also known as a prick punch), the positioning holes are referred to as prick punch marks. However, being manual work, the accuracy largely depends on the operator's skill. Nowadays, holes are typically positioned using electronic measuring tools, allowing center drills and drill bits to accurately place holes in the intended locations. The purpose is to prevent drilling deviations by using a "center punch" to create a "dimple" at the desired drilling spot, commonly known as "making a center punch mark."