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bill93
bill93
@bill93
Member P&R, Founder
Joined: July 1, 2010 9:00 pm
Last seen: September 25, 2026 12:38 pm
Topics: 291 / Replies: 9710
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RE: Trouble between GPS pairs - Help

How big are the errors? You say you recognize the grid-ground problem, but it isn't clear you are applying the combined scale factor to your TS measur...

9 years ago
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RE: NAD83 TM COORDINATE TO GEOGRAPHIC?

I went through both sets of equations looking for the squared term, and have it matching CORPSCON very well. The scale factor came out slightly differ...

9 years ago
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RE: NAD83 TM COORDINATE TO GEOGRAPHIC?

It looks like a very minor difference either way.?ÿ Is "wrong" a difference in the last place, about 0.3 mm??ÿ That's all I saw when I took out the ^2...

9 years ago
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RE: Missing book...

Posted by: Dave Karoly 4567 Review Questions for Surveyors by Russel C. Brinker, P.E.?ÿ 1978 edition on a shelf here Were you borrowing books all the ...

9 years ago
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RE: Topcon branded prisms all 0 offset

Posted by: rfc I think the assumption was something like a typical pointing error of +/- 5 degrees or so (for the prism). Your statement that the -30m...

9 years ago
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RE: Topcon branded prisms all 0 offset

Posted by: rfc you can target the target, not the prism so that even if the prism is not aimed precisely at the TS, the sight is good. The angle will ...

9 years ago
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RE: NGS Recovery report unit conversion

It appears a lot more editing is getting done than in prior years.?ÿ Things used to appear nearly verbatim as submitted.?ÿ I saw one data sheet that h...

9 years ago
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Replies: 2
Views: 657
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RE: What am I missing here?

You must include at least two known points, or a known point and a known bearing among your measurements in order to establish new SPC coords on anyth...

9 years ago
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RE: Has this land survey done professionally?

It sounds like the surveyor used one of two kinds of equipment.?ÿ If he used a robotic total station, it can be set anywhere with good visibility and ...

9 years ago
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RE: Traverse closure and error statistics

Posted by: Biruh Man can u do closed compass traversing with 12 side polygon in matlab their rise and ur fall, reduction level and the out put on exte...

9 years ago
Topic
Replies: 14
Views: 1334
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RE: So, you are gonna pincushion it...

Posted by: Nate The Surveyor You are retracing a survey, performed in 1965, with this kind of gear: ... They also had an old transit, and a cimpass ne...

9 years ago
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