Survey

[1voyager1]

quote:

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Originally posted by kalakoa

A GPS is not a surveying instrument. It can get you to with in 15' to 30' of your objective.

I used a more expensive GPS; it got me within 18".

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Why is it everything on PunaWeb seems to degenerate into a "Mines bigger and can pee further than yours" type of contest.
All I was trying to do was to illustrate how I got the job done that lavalinda said she wanted to accomplish.
She expressed concerns about the cost quote for a survey.
I got my task done for $90 and change.
While my GPS is no longer being made, it is still selling online used for less than $200.
Plus, the corner post verification had only cost the previous owner $750.
Although, it was on a smaller lot.


Now, to go back to the "Mines bigger and can pee further than yours" contest.
The reason for the degree of inaccuracy is not that the GPS cannot locate more accurately.
All found corner posts were located to within 3' in the refining process.
I could have gotten it closer.
For my needs that was close enough.

Where the inaccuracy comes in, is in projecting the waypoints.
You cannot input surveying level accuracy of bearings and distances.
That's where the 15' to 30' error through 435' comes from, and why projections through shorter distances are more accurate.
I seriously doubt if you can project a waypoint to within an 18" accuracy without a survey grade instument.

That's it.
I'm done with the contest.
I will only comment further if someone wants information that bears on the OPs original post.