Looks good. No problems with uniformity of illumination?The picture is a lot easier to look at upside down in my photo program. And it's been a whil...

JOHN NOLTON, post: 456912, member: 225 wrote: I would need a recorder and a person to hand me the observing fluid. If it weren't so long a trip from ...

FL/GA PLS., post: 456693, member: 379 wrote: Welcome. You can be the new Hurricane forecaster for us Florida folks. 🙂 I think those islands are a bi...

J. Penry, post: 456814, member: 321 wrote: some of the positions of precise triangulation stations can be up to a meter off Locally, I've checked a t...

J. Penry, post: 456712, member: 321 wrote: Crossed the same stream 25 times in 1.66 miles Well, that sure beats the one I found in the treaty line su...

J. Penry, post: 456522, member: 321 wrote: An elevation marker in the sidewalk in Pierre, SD, Steve Gilbert, post: 456615, member: 111 wrote: What ar...

Scotland, post: 456634, member: 559 wrote: Only if I had my rifle.... Your bullet would probably have hit a fence wire, anyway.

This relates to the Bench Mark Stability thread I started a few days ago. It would be interesting to know how deep that heaved post really was, as I ...

They must have improved its behavior but didn't fix the 0.000 special case. When I bring up the submission page it fills in all the boxes per my last...

John Hamilton, post: 456754, member: 640 wrote: Not that it doesn't like 0.000, I haven't figured out how to use 0.000. If I put it in my profile, w...

John Hamilton, post: 455258, member: 640 wrote: We did a bluebook project last year that had several vertical marks, it was not easy to get the 0.000 ...

Update: I have an OPUS (rapid) solution for the height of a stability B mark 3.3 miles from the culvert that measured -44 mm. I take that as evidence...

I should have replied earlier to this ...astrodanco, post: 455243, member: 7558 wrote: If NGS OPUS made use the E/N of the DELTA H/E/N in the RINEX he...

I tried my GPS setup method today for the vertically-mounted bench mark. This should be a more stable one than a post or culvert. Sky visibility sho...

Stephen Ward, post: 456442, member: 1206 wrote: Serveral years have passed but the circle is still visible due to differences in the soil, type of gra...

The logic could be ratioalized as the purpose of licensing is to protect the public. The US Gov doesn't need that protection for work within their si...