Setting the countersink depth for the tank filler flange - 1 hour

One small job to do is to countersink the tank filler flange. Not much to it other than to start the tedious process of setting the countersink cage depth. I had dimpled a piece of scrap with the tank dimple dies and then I would compare them with the countersink depth. I took some time, but I am finally at a point where I am happy with the depth.