A punch centering block device can include both a first block and a second block. The first block defines a first reference surface and notch extending along the first axis. The first reference surface can lay flush or can transverse the surface. The second block can be used to define a second reference surface and a second notch extending along a centered second axis. The second reference surface can lay flush on the work piece or can transverse to the second reference surface. The first block and the second block can also be positioned above one another to render the first and second axis collinear. The punch is slidable against the first notch and the second notch during the marking operation.