wrote:
Bob Noel wrote:
[snip]
Has anyone here used the type of equipment I'm mentioning? You should
see the time the thing I use takes to stabilize itself to show the
elevation... you'd comfortably CFIT if you had that in your airplane
yeah, but what is the accuracy of your GPS?
I suspect it is much more accurate than needed for aviation.


Not really Bob. Most building, refinery and pipeline surveys accept a
+/- 0.8 centimeter variation, so it isn't pinpoint like in aircraft, I
think.

I had my property surveyed and asked what the accuracy was. The
surveyor replied that 0.1 foot is the standard for most applications and
0.01 foot is required for commercial, high-precision applications.
They use GPS (DGPS??) but I don't know how.