I too have been using GPS for over a decade, starting with a Geko. I think you misinterpreted my question: as a hiker and mountaineer, I am generally happy with the accuracy of the horizontal position fix obtained by my 66st which I use for navigation with a variety of installed topo maps for different countries, and haven't walked off any cliffs!
That said, like other OPs on several forums going back over a number of years, I remain curious about what this Garmin accuracy number actually represents.
@Bushwalker8 That is helpful information, thank you.
I emailed this question to Garmin support some two weeks ago but have yet to receive any response. If I do, I will post it here.
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