[Inkscape-user] Precision of document size.

I want to create a document of 6.125 x 9.25 inches. However the tab for Document properties won't let me insert 6.125, only 6.12.

I can use 6.13 for now. But I wonder if there is a setting for three decimal places somewhere?

Inkscape 48.2 on Slackware Linux 13.37