I've already long considered finally applying times thickness gauge. Have some acquaintances, always proudly show me their knives at the BBQ or preparing the food. Now I have that and I have to say, the knife cut already only when you look at. The blade has bislnag much cut and remains still genaus as sharp as on the first day. A good investment, WMF etc not even begin to ... I had before and they were wesentlcih expensive. The only: I would like at the price a couple of solid plastic Schutzhällen desired since they are genuine sau sharp and are exposed in the closet.