I haven't played with it, but there is one from Michigan DOTAnd here's one that I cooked up to look a lot like the screenshot posted above. I have no...

There are many state boundaries that were disputed up to the Supreme Court level. As I recall, this one had one of the longest time spans - almost a ...

Clearly inadequate work...It's hard to characterize a group with one evaluation. The Power Squadron, when they were actively reporting, varied more t...

Clearly inadequate work...Almost 300 recovery reports to NGS. For almost all I can hold my head up if someone reads them. A few at first had greenho...

I believe Google stores an address for each end of a block or series of blocks and does a linear interpolation between those points for the location o...

Airplanes, pastures, it seems like Paden runs into feeding time just everywhere.

You can find forms for booking the readings, but I like my format shown in this spreadsheet.I was checking whether a suspicious-looking bench mark had...

If a true Bench Mark disk is no longer in exactly the original place, then it must be stamped RESET and data submitted showing the change in elevation...

La Place Azimuth CorrectionAn equation would have made it so much clearer.

Convergence varies significantly with only fractions of a mile toward or away from the central meridian of the map projection.Play with the NGS tool:

Convergence is a result of the map projection, going from geodetic coordinates to something like State Plane Coordinates.LaPlace is the correction for...

D,F,& K was written for people using a half-minute transit. There was a lot of room for improvement by averaging instrument readings before you g...

Averaging the times is making the assumption that the azimuth of Polaris changes linearly with time. This is a reasonable approximation unless the ti...

The "right" way is to do a calculation for each sighting and mean the resulting azimuths. For the slow apparent motion of Polaris, you can get away w...

To let Star*Net calculate something, put in a fake measurement with a * after it (in the place a ! would go to hold it fixed).D 10-9 812 *A ...

Our culture has a built-in assumption that whatever is on paper must be correct, despite the fact that it often isn't. Where in his surveying educati...

I don't know of a slick way, but I could do it with this laborious process:-Copy whatever.kmz to whatever.zip-Unzip the file and find the .kml within ...

>"excepting therefrom" and "together with" ingress/egress and utility easementsThose words added in a later post make all the difference, as I note...