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john-putnam
john-putnam
@john-putnam
Member Founder, Sustainer
Joined: February 4, 2011 9:44 am
Last seen: September 23, 2026 9:30 am
Topics: 82 / Replies: 2381
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RE: Glad we have CAD to do the "heavy lifting"

I worked for an small government agency in the last century as a photogrammetrist / analyst.?ÿ We had to were our security clearances on lanyard for a...

8 years ago
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RE: Portland surveyors in action

Maybe you, but when I look in the mirror I see the same good looking dude that passed the exam back in 94.?ÿ Just a little more of me.

8 years ago
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RE: Odd thing happened, points staked about 4.5' off

I wish the ODOT would have added mount points for both the current NAD83[2011 epoch 2010] values and the last rendition of NAD83[COR96 2002] they broa...

8 years ago
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RE: Odd thing happened, points staked about 4.5' off

John, I had not thought of that type of situation.?ÿ I would assume that Leica's similar solution probably works in ITRF as well.?ÿ I have not had the...

8 years ago
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RE: Odd thing happened, points staked about 4.5' off

I would venture to say that very few people, working in the USA, on this list should be using a transformation from WGS84 to NAD83 in their collector....

8 years ago
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RE: Odd thing happened, points staked about 4.5' off

The difference between FT & USFT is about 2ppm.?ÿ The difference depends on the coordinate system your using.?ÿ In the Portland area the differenc...

8 years ago
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RE: Accrual or Cash

Cash for 20 years here.?ÿ I could never figure out why I would want to pay taxes on money I have not yet received.

8 years ago
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RE: Accrual or Cash

Cash for 20 years here.?ÿ I could never figure out why I would want to pay taxes on money I have not yet received.

8 years ago
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RE: Cutting Tools

I have a couple of the Gerbers.?ÿ I do like the handle but I have found that the hole in the tip and the saw back get hung up on the black berry vines...

8 years ago
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RE: Request from client

Spledeus, I will say that you are definitely in the minority on that.?ÿ Every contract I sign seems to have a paid when paid clause.?ÿ I was recently ...

8 years ago
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RE: RTK Precision

Just like friends don't let friends scale without truncating, friends should not let friends set controls with poles and bi-pods.?ÿ If your going to s...

8 years ago
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RE: RTK Precision

If I'm assuming correctly and your errors are referenced in feet then I don't see a problem with your results.?ÿ RTK is only reliably good to a tenth ...

8 years ago
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RE: It never fails

For some reason deer have no problem hanging out with me when I'm working in the field but if I had a rifle with me I can go days without seeing one.

8 years ago
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RE: Schonstedt "Spot" locator?

I'm with FLS.?ÿ I have two pin finders, one Subsurface and one Schonstedt, that need repairs / recalibrating.?ÿ I'm curious if the Spot is as accurate...

8 years ago
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RE: Tree Canopy Survey Ideas

Andy, Most aerial LiDAR provides multiple returns per pulse as a result of the size of the beam at ground level. ?ÿGenerally speaking the last return ...

8 years ago
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RE: Tree Canopy Survey Ideas

Doesn't need to be Vietnam vintage.?ÿ Flying knap of the earth is still SOP.?ÿ I'm an air Cav army brat and spent most of my youth living on airbases....

8 years ago
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RE: Three section prism poles gradutated in feet?

Chris, I think the OP was concerned about the actual marking on the pole being in metric at the end of each extension?ÿ not adjusting for the prisms v...

8 years ago
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Replies: 5
Views: 1061
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RE: Three section prism poles gradutated in feet?

Chris, by adding length to the pole you are making all of the measurements read incorrectly.

8 years ago
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RE: Three section prism poles gradutated in feet?

What are you measuring with an adjustable rod that needs to be more accurate than a 0.01'??ÿ You could always memorize them to the thousandth.

8 years ago
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