HI, My client is having difficulty doing a measurement in Adobe Acrobat. Drawing sheets are published as PDF from the AC Publisher. Each drawing sheet is between 400KB and 3.5MB large. The building sections are the largest file size drawings and they will take 5-15 minutes to load if you just let Acrobat sit there and work. If you actively switch applications and come back to Acrobat, it seems to update the stalled redraw of the sheet in large chances. Doing this several times. If you do not do anything, it makes you think Acrobat has frozen. The drawings are fine in Preview and Safari, but my client wishes to use the measuring tools for distance and area from within Acrobat. Is there any known issues / workarounds to et things working? s there an alternative OSX PDF Viewer with measuring tools for such work? Or possibly a DWF viewer could work? Please help. I did not find the right solution from the internet. References: https://archicad-talk.graphisoft.com/viewtopic.php?t=43708 Motion graphics animation studio Thanks!