> I had our crew run a big level loop with the Leica DNA 10 Digital Level. They ran 38,000 feet with over 300 feet change in elevation. They miss...

We do dam deformation surveys at 16 reservoirs and 23 navigation locks-almost all have some of these (sometimes 10+ at a project) for stable reference...

one thing to consider is that sometimes the prism offset is getting applied twice-once in the gun and again in the data collector. Have you checked th...

I guess it could be done without a data collector routine. I manually processed it all, using the formulas that Shawn gave, but the shots were labeled...

You have two prisms on the rod, and you have two HI's. You can hold the rod at any angle. The TSC2 Survey Controller has a routine to shoot this, and ...

John: I had told Wendell long ago that I had no problem with that, but I never heard anything back. I think what I will do is to make the program defa...

just south of Pittsburgh

Jim: that was my next idea, but the wife nixed that 😛

It doesn't need any more memory to do one point or 50 million. It is reading them one at a time, so it just takes some time.

After some thought about this, I have decided to have my program use -6 for dates before 2/29 and -5 for dates after that, same as RinexDates does. Sh...

I doubt you will see any significant difference using the rapid versus final. I almost always use the rapid in my processing.

Don: It is a membership of organizations, so if you are a member of ACSM, you are automatically a member of FIG. I'm not real sure it matters-I think ...

Thanks, Bill. I had wondered how to link to a specific PID in a URL.

Here is the oldest station I have found: BETHEL 1839 (PID=JU3319)It is a "cone", originally occupied by the first director of the coast survey, Hassle...

Here is a USGS triangulation station (ARCHIE 1948) I found in Wyoming last year with a signal still in good condition.