Last seen: April 17, 2026 11:39 am
Two things. Precise leveling of instrument when steep sights are involved. And, sighting the sun too early in the morning can be an issue with atmosph...
Um just to clarify...Using my method you'll be in elevation view.
In excel swap columns for elevation with the column for the north. Assuming north is perpendicular to wall. Works better if your coordinates are stati...
About the only thing I understood in that article was the authors names. And that took two try's.
8b. Teaching land surveying subjects. You have to be an LS?
DMM is 100% correct. Absolutely no reason to do the Solars again. Just get the angle between the wrong mark and the right mark and re compute.
the +/- 5mm is a constant independent of the length, plus 1ppm times the length converted to kilometers.
A copy of my inverses on Clarke spheroid.Castle Stevens really upsets the apple cart. Considering most of these stations are second and third order ho...
Is NADCON 5 available yet?
Three things.It could have been two stations with the same name. If you read the XYHt story linked above its an issue in the USSD to NAD83 transformat...
I think USSD used Principio and azimuth to Turkey Point.Memory.. Hope the data banks aren't too corrupt.Edit; nope I'm wrong New England datum used Pr...
I was able to make progress on my task at hand by other means. I have a terrible copy of the Dock Department map.A detail of the "Title block"? Mo...
:-)I wrote the 2001 recovery note.
Nice thing about USSD is you can inverse it in NGS toolsinverse because they share Clarke 1866.Clarke 1866 is one of their choices.Along with custom e...
Unfortunately no conversion tool.find some NGS stations close by that have USSD and NAD27 positions and inverse with the NGS geodetic tools to derive ...
You're in the same boat I'm in.Those are most likely United States Standard Datum not NAD27. It's more complicated.