Height of cut

Here I'm looking through my prism gauge to see the actual height we are cutting at, I bench set units at 2.60mm.

 As you can see in the picture is a uniform cut but height is 2mm & with stimp meter  which measure how the greens are running slow 4.5 feet, medium 6.5 feet, fast 8.5 feet, speed is not the main factor but majority of golfers prefer fast greens,  the main reason for stimp reading greens is getting consistency through all greens, not only stimp meter for how the greens are running but also for smoothness.