Yes, the "combined" scaled factor explanation of the ground AND ellipsoid was very helpful... basically just to "squeeze" all the longer areas down to the smaller grid area beneath the surface at their intersections.
Some people are so smart and understand completely, they can just explain something seemingly complex very SIMPLY.
Funny. I use TA and the time I had to use Survey pro for a week it looked and functioned like simplistic program for a child. Too few options, features and not intuitive.
> I learned about lat/long being the “true” measured positions, and grid coordinates are the calc’d ones.
True, but only up to a point.
If you change your spheroid model even the lat/lon changes
"... I use TA and the time I had to use Survey pro for a week it looked and functioned like simplistic program for a child. Too few options, features and not intuitive."
Yup. That pretty much sums it up. Except that since I had cut my electronic data collection teeth on TDS many years previously Survey Pro was quite familiar, and therefore intuitive - to me.
