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Date: Wed, 26 Jun 2024 16:15:40 -0400
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From: bad sector <forgetski@_INVALID.net>
Subject: Re: app for precision coordinates
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On 6/26/24 15:40, Andy Burns wrote:
> bad sector wrote:
> 
>> I'll get my wife to install GPSaverage on her iPhone
> 
> I used it on Android, is it available on Apple too?

https://apps.apple.com/us/app/gps-averaging/id841885774

the problem is that when 'husband' suggests it, it ain't gonna happen 
for two years!

>> meanwhile I did some tests manually at two known surveyor pins by 
>> putting the phone down for 3-4 minutes at each and noted 
>> starting/ending readings (which showed steady unidirectional drifting).
> 
> Actually yes, I've got a few survey nails around my plot which I could 
> test out.

I had put 4 2-foot cement tiles around the pins and painted them white. 
They show up very nicely on GE but I have no way of knowing their real 
positions. The pucking surveyor charged me 6 grand to put down 7 pins 
but when I asked him if he'd give me the coordinates he said "oh, we 
don't do that". The placemarkers with the readouts put the LatLongs with 
quite an offset.