<https://forum.affinity.serif.com/index.php?/topic/91168-rulers-in-publisher/#comment-483492>
<http://schema.org/text>
"I'm not sure if this is what you want, but as with the other Affinity applications, if you have Snapping enabled, and an object selected, you can press the Ctrl key (on Windows; possibly Cmd on Mac) and hover the mouse over other objects and you get a dynamic measurement showing you the distances from the selected object to the one you're hovering over.\n \n"
<https://forum.affinity.serif.com/index.php?/topic/91168-rulers-in-publisher/>