Slab talk: Finished gravel

About done with the slab base.  The picture below shows the progression.  On the left at the edge is the 2" rock, and then there's a layer of 5/8" minus rock in the center, forming a 2" raised area, to reduce the amount of concrete needed for this slab. 

and here's the finished surface.  I took this picture after dark because it's a lot easier to check the level after dark -- you can see the laser level better.  This surface is plus or minus .25", so we're good.  A couple of simple forms, and we're ready to pour.