So I was loosening the elevation locking knob and trying to move the sight up in the smallest increments I could.  I assume this is what you have to do?  I got lucky with two elevation adjustments but this was at 50 yards.  It will be harder at 100 and 200.  I can just see myself bumping the sight right before a match and trying to adjust it on the line.  I was between the 2 and 300 yard marks at 50 yards so the front sight blade is probably tall.

What does the chart mean by "one point"?

Where do you guys get these pics? :)