I have no idea about law.?ÿ But reasonableness says there is good evidence of a sale of rights in some land.?ÿ If it can be determined by other means ...

While alerting others to what the market COULD bear may be helpful, be careful to avoid charges of price fixing.?ÿ A state society once found itself i...

As I think I understand it NGS will provide a correction for tectonic drift, so you won't?ÿ be stuck with that 2 cm/year change in coordinates.

>I needed it for a vertical on a topo For topo, you could probably get an accurate enough elevation from the concrete with a small correction for h...

There is considerably more ballast there than in this 2005 picture, so possibly it was snagged by a machine spreading the rock. One could find signifi...

Very good post. Except that it is known that some of the original notes were fiction as to the actual order things were done, with lines stubbed in an...

A couple weeks ago in our hottest weather my display went unreadable after sitting in the sun.?ÿ I rigged shade for it and it recovered.?ÿ That sessio...

The advice at NGS is that the sky should be visible from 15 degrees above the horizon in all directions, with minor exceptions for poles or small tree...

In addition can you cut a shallow line on the concrete of the manhole?

Actually, OPUS ignores that line in a RINEX file and makes you enter the height manually.?ÿ But it would be good to know what's in the file in case yo...

OPUS wants the height of the ARP above the mark.?ÿ The ARP is usually the bottom of the antenna assembly so for a 2-meter rod you would want 2.000.?ÿ ...

Exactly.?ÿ The primary purpose of my sessions is for elevation for GPSonBM, so avoiding measure-up is desirable.

Trying to find GPS suitable marks. can be frustrating, and the one you hoped would work just doesn't quite do it. The most survivable of the old marks...

A circular curve has one radius, the same value whichever way you want to state the degree of curve. If you calculate radius from one of the degree of...

Numbers?