I see what you mean about ellipsoid changes after looking at this one from Wisconsin.?ÿftp://ftp.dot.wi.gov/dtsd/se-region/10903070_Construction/CADD_...

That's the sensible thing to do. I wonder how many of the folks who create these projections understand the ins and outs as well as they really need t...

I certainly agree with you and Loyal that calibrations can cause more problems than they solve. Once a coordinate is adjusted by a combined factor, it...

So the input for the most recent calibration was the ground (local) coordinates? Were there additional parameters entered? What output, what kind of t...

Yes. It seems that the software is being fed ground coordinates but believes them to be grid coordinates. Apparently, it thinks that the scale factor ...

If we go back to the basis for reducing ground distances to grid distances, we divide the ground distance by the elevation factor to get the ellipsoid...

Apologies for the minor hijack, but it's interesting to note that, when r = 2, the combinations formula reduces algebraically?ÿ to n(n-1)/2.

Interview questions can be Googled. For the search term "interview questions for surveying instrument man", some examples that pop up are:

Every firm has its standards, but one that chooses calculators over people may not be the best place to work. I was looking at my arsenal of calculato...

This forum is just so far ahead of the curve, it's scary sometimes. Two years ago, we discussed the equivalence of tangent and secant Lambert conforma...

The biggest discrepancy in the NCEES calculator policy, in my unwashed and humble opinion, is that the HPs are programmable while the TIs and Casios a...

Why are the TIs not permitted?