[chronomex]

Yeah, it's feet measured east and north of an arbitrary point southwest of everything in the state. There is an actual point inside the state used as a base but they set up a false easting and false northing by subtracting a large round number such that the origin of the coordinate system is southwest of everything in the state. A lot of things in surveying are designed such that the math is easier for people working in the field to reliably get correct.