@mightymoe Heck, Moe, I don't even go out on the beach anymore. I observe the sun in the shade from the porch and don't see Polaris 'cause the porch...

@john-hamilton Yes. The specific problem in the prior posts was to establish a north-south line -- a meridian. One was for the anemometer to be moun...

@john-hamilton ks Don't give up on it. I read your publications on azimuths and other topics many years ago and learned a great deal. You are someo...

@holy-cow Nor New Yawk.

Some NGS applications require leading zeroes, even in degrees of longitude. For example, in the radial search option for data sheets, 80 degrees has t...

If your state is anything like NC, nobody knows where the county lines are. Heck, in some areas, we don't even know what state we're in.

Really, really good exercise for learning. If we use Q-Cogo's Helmert transformation (what the math behind the others is, I have no clue) with its ca...

@field-dog Adjusting the grid azimuth by the convergence angle produces the Geodetic Azimuth. Adjusting the Geodetic Azimuth by the LaPlace Correcti...

@norm

A surprise or two here:

Apparently, the answer to the question of finding Helmert 2d coefficients with a scale factor of 1 was answered by private message. Maybe it’s arcane,...

@mightymoe That makes sense.

@rover83 The thing that confuses us laymen is the term "based on." Grid north is calculated from coordinates and true north can then be calculated f...