I think 8 mm/sqrt(km) = 0.031 ft/sqrt(miles) 0.008 m /sqrt(km) = (0.008/0.3048) * sqrt(5280 * 0.3048/1000) = 0.31 ft/sqrt(miles) Note that claimin...

You aren't taking the square root of the factor on loop length but need to.

I studied prism reflector pointing errors and concluded that for a mini-prism the worst distance error with any attempt at pointing was on the order o...

In a different genre, how did the Star Wars spacecraft in a vacuum perform swooping turns like airplanes do in atmosphere? In the movie Gravity, whe...

Whatever one is on the table in front of me.

The main station is JV3369 Not sure why it wouldn't come up for your search.

This instrument should allow you to run a good straight line. But be careful what you use for a south reference. The compass will not necessarily poin...

The angles can be expressed various ways and, if consistent, be understood. What annoys me is that before GNSS, angles were measured but then the par...

Next silly question about the Nikon. It has options for Curvature and Refraction of OFF, 0.132, and 0.200 but I can't relate those numbers to any valu...

My wife's family land is a mess in that the legal parcels do not line up with the creek, road, and usage, among other problems. She and her brother d...

The type of foot is as much part of the definition of a projection as the false northing and easting. If your SPC or LDP was defined with US Survey fe...

People often forget how much averaging it takes to get angles accurate to the instrument spec. The definition isn't intuitive.

What are your state's accuracy standards? The 0.01 ft is most likely a requirement for resoluttion expressed on a plat, but the accuracy spec will be ...

Moe - that's pretty much what I did, using two "known" points. Lurker - I don't suppose there is any way to get past the "Tilt Telescope" message with...

Thanks. Your reply reduced the amount of checking and thinking I have to do. I suppose, though, I should some day go through the process to measure th...

The link I put in this thread seems to work.

The Old NW corner was marked by Sullivan about 1816 at 100 miles north of the mouth of the Kansas River and a line run east to define an area accordi...

@Norm <div>Do you count the Old Northwest Corner of Missouri? It is, admittedly, a remonumentation of the 1816 point, but was declared by the US...