Laser marking location matters on micro tools because of the tight tolerances

this micro tooling manufacturer I worked with laser marked the ID on every tool for traceability and they put it behind the last tooth, on the back rather than on the shank, because on the shank it can affect the tool's roundness/rotation And they hold 2-3 micron tolerances, so they have to be aware of the marking location. Thought it was an interesting fact to share, like how small details become significant at that scale