As I read the old text books, it seems that Philadelphia, Chicago,, Detroit, etc. refer to the way the scale is marked, rather than the construction o...

Is that the amount of convergence?

1) Your profile says you are licensed in Michigan. That seems unlikely for someone asking this question, and should be corrected. 2) In many states, ...

I doubt refraction has much effect on a vertical beam unless you are in a situation with air at a different temperature than a vertical wall.

If you make things to last you don't sell as many.

My brother-in-law bought a piece of pasture adjacent to his other land. The GIS shows a strip across it that he doesn't own. I looked up the history a...

From what I remember reading on the forums he was a good surveyor who also demonstrated the potential of GIS done right, and a good human.

want your D-size drawing on a size they can print at thier desk Do any reproductions (other than contact printed bluelines) actually preserve a kno...

The short videos can be entertaining, but most have low content of useful information. And it isn't a 2-way exchange.

A more relevant statistic is how many distinct individuals have visited the site in the last month. Probably a modest fraction of the 13k registered. ...

Of they can live with it, tell them to give written permission for the fence to remain until it needs major repair, upon which it must be taken down a...

@mathteacher I think they refer to the arithmetic mean of the forward and backward geodetic azimuths. Those values can be rather different for a li...