Is the measure tool supposed to round?

If I create a wall that are 10188 mm and measure it, it shows 10190. If I open the wall it says distance between points 10188.

xStart='20.4'
yStart='1018.8'
xEnd='20.4'
yEnd='0.0'
height='260.0'
thickness='40.8'

Other walls it measures correctly, so I'm a bit confused.

It also does the rounding, even is I scale by 10

xStart='204.0'
yStart='10188.0'
xEnd='204.0'
yEnd='0.0'
height='2600.0'
thickness='408.0'