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john-hamilton
john-hamilton
@john-hamilton
Member P&R, Founder
Joined: September 13, 2010 5:25 am
Last seen: September 17, 2026 2:17 pm
Topics: 409 / Replies: 3051
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RE: Bound field books versus loose-leaf

Dave Karoly, post: 384629, member: 94 wrote: I am not a fan of loose leaf field books...don't like trying to write with the rings in the way. If I'm ...

10 years ago
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RE: Reliability of OPUS derived elevations on mountain peaks

Bill93, post: 384633, member: 87 wrote: That Iowa line was about 10 miles from my house. I wish I'd have been able to catch them at work and watch.Pe...

10 years ago
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RE: How did "old school" chaining work?

good catch! As you can see from the notes it does not appear that they were correcting for temperature, but that would not make a large difference.

10 years ago
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RE: Let's talk Trimble Access for GNSS Work

yes, but it will tell you "excess movement" if you have not yet stored it, assuming it didn't stop at the required number, you can move after it stopp...

10 years ago
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RE: What's the dumbest survey you've ever done?

TXSurveyor, post: 384580, member: 6719 wrote: Did a topo for a 20'x20' square on a leveled, and rocked well pad. The topo was for a new engineer that ...

10 years ago
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RE: Trimble S6 stolen in Pottstown PA

I wonder when it will be available at the pawn shop? I need a new one...radio just went out on mine and it will probably cost $$$ to fix it.Just kiddi...

10 years ago
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RE: Bound field books versus loose-leaf

Only one client ever gets field books, I just asked and they are fine with loose leaf. They have 2700+ field books, and quite a few of the old ones ar...

10 years ago
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RE: Reliability of OPUS derived elevations on mountain peaks

To get a better elevation of something like Mt Everest they will GPS it, and tie it to BM's around the mountain (usually quite far away). I have alway...

10 years ago
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RE: Let's talk Trimble Access for GNSS Work

what, Lee, you don't give it a new name and then inverse to see how close it is? (sarcasm).Never understood why people do that, all you have to do is ...

10 years ago
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RE: Reliability of OPUS derived elevations on mountain peaks

depends on the mountain. If it is a large mountain, there could be unmodeled features in the geoid, and it is the geoid model that determines the orth...

10 years ago
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Replies: 19
Views: 1144
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RE: How did "old school" chaining work?

Berk Blake PLS CA, post: 384520, member: 7998 wrote: We used to use the 300 foot canyon tape, 1/8" wide that was compared to the Lovar tape that had b...

10 years ago
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RE: How did "old school" chaining work?

I am currently trying to compute a 1945 survey where they were tying in (i.e. computing coordinates for) sedimentation range monuments, set in pairs, ...

10 years ago
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RE: How did "old school" chaining work?

We used a 200' steel tape, but always yelled CHAIN! when the end was approaching. It was an "add" tape, graduated every foot and then an additional fo...

10 years ago
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RE: Trimble Zephyr Geodetic Model 2 (two types?)

Works great. The only thing I noticed is that it draws a lot more power than an R8 or R10. I guess I haven't used my 5700 (CF card problem-intermitten...

10 years ago
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RE: Trimble Zephyr Geodetic Model 2 (two types?)

That is what I believe, that they are exactly the same other than the solder, but the different numbers made me wonder.

10 years ago
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RE: Reducing Astro Observations for Azimuth determination in Star*net (or not)

John Hamilton, post: 383558, member: 640 wrote: I would put in each observation separately along with a weight.I will be presenting a class/workshop a...

10 years ago
Topic
Replies: 10
Views: 2511
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RE: Trimble TBC office version question

Jim Frame, post: 384224, member: 10 wrote: I tried that. It appears to be essentially the same interface as the import dialog -- likely hooked right ...

10 years ago
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