At the risk of being pummeled about the head and shoulders, I would point out that there's no such thing as a state plane slope distance.

@ashton DNRGPS may do what you want. See page 98 at this site for the link:    Hope it works for you.

@david-baalman There's no substitute for eyeballing the data. Just to add to the scale factor consideration, one does not have to be ground and the o...

Perhaps the systems have different scale factors.?ÿ

@paden-cash Things may not have changed as much as we might think. One thing on a met tower that needs to be aligned to true north is the anemometer....

@consultant You've probably decided what to do, but here are some things that might be helpful going forward. First, CA Zone 6 state plane is defined ...

When I first discovered the rich mathematics embedded in surveying (roughly 20 years ago), coming across a copy of POB was like finding gold. I tried ...

@consultant So why not use EPSG:6317? It corresponds to NAD83(2011), the most up to date state plane projection. Have you tried multiple EPSG definiti...

@consultant   Some things, like the @Bradl statement, are easy to check. Consider NGS mark AA7159 in Riverside County, CA, which is in Cali...

@bill93 Thanks. I thought that was a little light.

@dave-karoly Wikipedia uses US survey feet to convert the length of Interstate 40 from miles to kilometers. Using International feet would make rough...

A "big" snow for us is 5 inches. The 4WD daily commuters are ecstatic; push the button and hammer down, then hauled out of ditches and up embankments ...

Least squares adjustment in the field.

Searching for western movies with land surveyors turned up this:?ÿ A lot of the names are probably familiar, but some of the references may not be. H...

@jaro Just trying to learn. Aren't there 4 different paths through E-D, two starting at A, one from B and one from C? Why did you choose A-E-D-A and B...

This exercise, in my mind, is designed for a hand calculation of a least squares adjustment of the data in a classroom setting. The pedagogical value ...

@john-hamilton How does it affect the output?

@john-hamilton Shouldn't the distance from A to F be 1020 instead of 1002?

@monte One other question that this thread raises is how computed distances change when NAD 83 coordinates are converted to NAD 27 coordinates. Since...