Surveying

After the land prep, we are surveying.  The very expensive gizmo my brother-in-law Sam is holding has a GPS built into the top.  The survey plans are on the tablet mounted to the pole.  By moving the pole and using the bubble level mounted to it, you can pinpoint within a couple of millimeters where you are.

After everything is staked out, you spray your lines so the excavators know where to dig.