I decided to run the laser flat today checking grade at various locations across the parking lot with a rod. I did take out the automatic level from behind the seat to check up on the laser. Thanks for the tip. RRW
If the rotating laser is placed midway along the short side of a rectangular parking lot, the water designed to flow straight across to the other side, once the laser is set to proper slope and receiver is set on the rod at grade (grade being the same along the high side of p/l next to curb)...
