This is a weird one. I'm working on utility pipes, getting elevations and structure tops. I have found that when calculating geometry, or sometimes transferring numbers with the field calculator, the elevation number I expect is off by exactly -0.0000235 feet.
I'm using Virginia State Grid North for the XY coordinates, and NAVD_1988 for the z values. What I'm doing doesn't require a precision of more than 2 decimal places. But I still wonder why this comes up.
Is there some mathematical significance to this number? Have I found the question to life, the universe, and everything?