Making a graduation punch

I had time today to also make a graduation punch. It will be used during the graduation of the plates are brought to final thickness. The punch has a sharp point whose distance for the peg underneath can be adjusted. The idea is the same as when drilling the hole during hollowing. With the punch one can mark the areas of the plate which are thicker than the distance between the peg and the point.  Once the areas have been marked one can the easily remove material from the correct spots.