There is some delay in getting the data to the NGS OPUS server. I had a session that ended before UTC midnight last evening. I checked the NASA web ...

I've even had to provide ID to just renew a certificate of deposit with the current "special" rate that is better than the automatic renewal. No mone...

Here's my current understanding: Astronomical north is defined by the celestial pole (which Polaris is within a degree of). If you sight the pole an...

I've looked briefly at Wolf & Ghilani _Elementary Surveying_ and realize I don't understand Laplace correction yet. What I said above is at leas...

rfc, post: 367987, member: 8882 wrote: At 0mm offset, you can't aim at the center of the prism It's not just aiming for angle. The EDM will give a l...

Did each member get a tax bill for 10 cents?

eapls2708, post: 367957, member: 589 wrote: there isn't much room for an unlicensed person in many organizations who isn't able or willing to progress...

Minor point: I think the Laplace correction given on the NGS data sheet is for Polaris (vertical angle matches latitude) and will be different for sol...

Timberwolf, post: 367766, member: 10599 wrote: four year degree requirement, and then once I get that, my experience starts all over. That's just wro...

Not functionally good. Or something that rhymes with that and shouldnt be posted.

Law baffles me. If someone attacks another person and injures them, why does it matter how their tool/weapon was classified?

Bill93, post: 367534, member: 87 wrote: wants you to assume line 2-3 is level, or equivalently that 1-3 is plumb I meant to say:wants you to assume l...

Some things are not clear about your problem:I suspect the writer of the problem wants you to assume line 2-3 is level, or equivalently that 1-3 is pl...

Is this still the best place to check for availability? Does NGS OPUS update at the same time this one does? I submitted an OPUS session from week 189...

Bill93 said: ‰ ÔStupid question #N+1 : I think a LDP has less arc-to-chord correction by having the standard parallel and meridian close to your proje...

For others who weren't familiar with the Benson Syndicate, here are two out of lots of hits in a search.

Another option might be to buy an older GPS receiver for static sessions - far cheaper than an RTK setup. Set it up where there is sky and tie into i...

Being adjacent to a major river, it seems likely the boundary is riparian. When the land was earlier surveyed they meandered the river to have a desc...

In a quick scan I didn't see mention of the effect of changing extent of marshes. It would seem that the boundaries should have been set centuries ag...