How do you find the limits of areas on a chart?

Do you mean how do you find the boundary as depicted on the chart, or
how do you relate the depicted boundary to an actual physical location
out in the real world?

How do I relate it to the real world? In other words, how do I know,
as I fly along, whether I'm inside or outside a boundary? Very often
the boundaries cross largely empty areas of the chart, with no precise
indications of how to locate the boundary in the real world.

If the latter, when all else fails, some pilots fall back on an advanced
technique that is all but forgotten in this age of GPS. It's called
"looking out the window for landmarks."

But the charts don't have that many landmarks, and the boundaries
rarely seem to be based on landmarks; instead, they seem to have been
surveyed.


You call up flight service 5 days before your flight and give them your
flight plan, then on the day you fly your planned course is drawn on the
ground for you to follow, danger areas on either side are highlighted with
red boundries painted on the ground.