Might have been a corrupt ephemeris rather than an old one.

Strange. The transformation parameters don't look like enough to produce the difference in positions that Bill93 saw. Must be some difference in the s...

Phil Hartman used to do a sketch on Saturday Night Live called caveman lawyer. He'd always be in court making a final argument and he'd start off with...

Upsampling will work with any correction source. RTN users are working with upsampling with Leica and Trimble RTN's.

Really nice presentation, Thad. Thanks for sharing. I've thought of using other patterns, but solid seems to work okay the times I've needed it. Do yo...

elkboarder, post: 421867, member: 12485 wrote: For whatever reason Trimble seems to be more accurate for setting control.I don't want to be argumentat...

That was a lot of fun, Jim. I know I sell the stuff and I shouldn't be surprised when things go right, but when I'm sitting in my office in Kilgore, T...

We work hard to at least make it look like we know what we are talking about.Good luck to you whatever route you take on this.

We export ASCII text file for points and NGS g-file for vectors. If TBC can directly import NGS g-file vectors, you should be in great shape for adjus...

Staking a cluster of points that require tight relative accuracy and that are a close proximity to each other, like a building, from a long distance a...

elkboarder, post: 421717, member: 12485 wrote: I agree, my errors are generally very low. As a check once I am finished occupying that station I will ...

Ryan Versteeg, post: 421665, member: 41 wrote: Here is a portion of a Caltrans Appraisal Map. The colors are extremely helpful in identifying the exi...

Resections from solid control and good geometry is more precise than traverse from two control points as the instrument setup error is completely remo...

flyin solo, post: 421628, member: 8089 wrote: Shawn, please start teaching a class. I'll refer your first two students:That's terrible. If anyone is...

I like using color in topographic surveys. I don't use them in boundary surveys. I definitely think it's unwise for information on a boundary map to r...

St. Arnolds is really good stuff.

I never noticed a break. I was still picking them off in December and January. Haven't really been in tick infested places since then though.

Ugh. Isn't that the truth. Some folks can complicate the pure joy out of daily existence.

Bill93, post: 420928, member: 87 wrote: I think the effects of gravity variations are usually negligible in terms of reducing slope measurements to g...

Thank you for sharing, Teach.