Wrong Sclae while export PDF with scale 1:250000

Question

Hi community,
i want to export a map with a scale of 1:300000. This maps got a UTM grid. (Yeah i know, not really useful. but the customer.....)

If i export the map as pdf the gridboxes are 3,4cm wide and not exactly 3cm.

i player with the scale and saw the difference starts at scale 1:251000 and get's bigger with a bigger scale.

Can somebody explain whats going on?!

DavidPike · Answer

How does it show in the layout view in Pro?  Possibly fit-to-page on the print is skewing it?

robber171 · Answer

yes it is the same...

DavidPike · Answer

Is the Map projected coordinate system the same as that UTM Zone?  I'd guess that's the issue if not.