dodge man
Super Star Member
Now throw in the fact that the length of the US survey foot changes to match the length of the international foot Jan 1 2023. I wonder how that will effect new surveys and trying to incorporate the previous shorter foot into the mix.
Not much. It comes down to the metric conversion, which I know doesn’t make sense but that is the way it works. 3.2808333333 Us feet=1 meter. 3.28 international feet=1 meter. If my math is correct a distance of 1000 feet will be 999.75 feet international. It’s really only and issue when going between meters and feet.
To further complicate things, and a good example of why coordinates can be mis used, what happens to the coordinate system in Illinois? They are also a conversion from metric. In my area the numbers are in the 1 million and 2 million range, so when converting to international feet instead of US feet, it impacts the coordinates something like 20 feet. They are also coming out with a group of new coordinate systems by county or a group of counties in Illinois. So you can see the problem with coordinates, US feet, international feet, or the new low distortion system?
Most states have been using the international foot all along, just Illinois and a few other states are changing.