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jlwahl
jlwahl
@jlwahl
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Joined: July 1, 2010 7:07 pm
Topics: 5 / Replies: 199
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RE: google earth n handheld gps

I think that the WAAS corrections are based on ITRF00 reference frame and therefor at least some of the handhelds which are receiving WAAS corrections...

14 years ago
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RE: Oklahoma Survey

Normally the GLO was very diligent about following the laws.The Federal government can survey and 're' survey their own lands to their hearts content ...

14 years ago
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RE: SECO strobe prism

I'd be glad to buy it. Email me the total cost including shipping. [email protected]

14 years ago
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RE: Sayings of your mentors in surveying.

My version is " We are not building a piano out here!!"Funny thing though the next 4 or 5 jobs boundaries had a striking resemblence to the shape of a...

14 years ago
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RE: Upper Culmination of a star...

Of course upper and lower culmination do occur at (local sidereal hour angle) of 0 and 180 it is only elongation that I was referring to.

14 years ago
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RE: Upper Culmination of a star...

Short answer, NO you are not correct. Even for a close circumpolar star like polaris the hour angle for eastern or western elongation is not 90 degree...

14 years ago
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RE: Celestial Navigation...

You can practice the computations on land by using a transit instead of a sextant, since you don't have a true horizon most places on land. Artificial...

14 years ago
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RE: Surveying tips and tricks thread...

Back to mirrors. The flag man doesn't have to have a signal mirror since most of the time they have a prism. In woods it is often difficult to see t...

14 years ago
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RE: Post-Apocalyptic Survey Kit

Sling PsychrometerHumidity was involved in microwave EDM reductions. Not sure there are any of those around any more.I have not seen any normal formul...

14 years ago
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RE: Slide Rule

I realize that the slide rule was a better fit and match for the perceived accuracy of the technology of it's era, but I find myself now trying not to...

14 years ago
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RE: Slide Rule

I have a 4102 on indefinite loan. It has special scales for computing an altitude solar, as you can tell from the manual. That manual only surfaced ...

14 years ago
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RE: Principal Meridians

Well Al White tried it about 12 or so years ago and wrote a book that the PLSC (Colorado) sells. Since then a number have been rehabilitated, a few r...

14 years ago
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RE: Solar panels and 2° azimuth...

A little offensive maybe, but any licensed surveyor that cannot do a simple solar should have questions about their ability to practice which borders ...

14 years ago
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RE: getting ready for 1/4 corner saga also subtitled i wish

A GLO or BLM plat that shows two courses (even if they have the same bearing) means that something was found there. So either the aluminum cap is a r...

14 years ago
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RE: getting ready for 1/4 corner saga also subtitled i wish

Montana plats are on line at glorecords.blm.gov. Nothing you describe as the dates of surveys matches for that township.Notes take a lot longer to get...

14 years ago
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RE: HP-41 Auction for Charity - Support for 911 Heros

CONGRATULATIONS JLWAHL - WINNER!!!!!!Sent you an email on this system a number of days ago. Is there some other email you wanted me to use?- jerry

14 years ago
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