Acrobat Ruler is Off

[defaultrrv4cog2ul9l]

I've seen this post elsewhere with no reply or replies that don't apply. My ruler in Acrobat is off. 

Clearly shows in bottom left that it's a 12" x 9" document but ruler shows it a little over 10.125".

[Abambo]

What are telling you the PDF properties (ctrl/cmd D)?

[Meenakshi Negi]

Hi defaultrrv4cog2ul9l,

Thank you for reaching out.

Please let us know if this happens for all PDFs you open in Acrobat or a particular PDF.

Also, try checking the document properties. Go to Menu > Document Properties. Share the screenshot with us.

You may try repairing the installation. In Acrobat, go to Menu > Help > Repair Installation. Check if that changes anything.

Share the sample PDF with us to replicate this behavior.

Let us know how it goes. 

Thanks,

Meenakshi

[metallums18]

All PDFs I currently open the rulers will report the wrong measurement.

However in the lower left corner the document size is reported correctly at the size I created the file. 

Also choosing control/command D to see file properties is listing the correct size.  But the rulers on in the acrobat interface are off by inches at times.   22x34  document shows as 19.something x 29.something.  

I read another post, https://community.adobe.com/t5/acrobat-discussions/rulers-not-reader-correct-size/m-p/14150035, that is suggesting a solution is to change my PC interface monitor scaling.  A suggestion given by one person to change their system to 110% supposedly helped the original poster of the question.   Now it is listed as a solution?   is it really?  Or is it a workaround?

I don't plan on changing my 100% PC screen scaling to get Adobe Acrobat to show rulers correctly on the document size it knows the actual size of.   Since when has that ever been necessary?   I'm certainly not choosing an arbitrary 110% scale of all things on my monitor and pc interface to make acrobat appear correct.   

I've tried reparing the acrobat install through menu/help/repair installation which was a suggestion from the community.   No improvement seen.  Does anyone know a real fix for this?

Using windows 11,  Acrobat pro version 2023.006.20360

[Luke Jennings3]

Here is a link to a related discussion where uninstall and re-install fixed the issue:

https://community.adobe.com/t5/acrobat-discussions/ruler-scale-is-wrong/m-p/14215583#M437727

If you see the question "do you want to overwrite the existing preferences" say yes.

[metallums18]

Thanks, but I had found that page and tried the uninstall/reinstall and it didn't work for me.  Never did get the question about replacing preferences and I didn't manually do so.

[Brad @ Roaring Mouse]

First off: do you have only one monitor? Having an external monitor that has a different pixel resolution can often cause this. But even if not, because monitors are all over the map these days (hi-pitch, Retina, etc), as wella diffrent driver settings to chnage screen resolutions, Acrobat may be getting inaccurate infor as to what your resolution SHOULD be and hence your rulers will be off. Go to your Acrobat prefences under Page Display. You will see a System setting (what Acrobat thinks your resolution is based on the onfo your computer hardware is giving it) and a spot for a Custom setting. A custom setting of 110 (as mentioned before) is a good one to put in Custom. Select that, then Quit and Relaunch Acrobat to register the change, and check your rulers again.

[metallums18]

Brad, I followed your advice and changed my resolution listed in preferences to 110 ppi.   This did correct the rulers for me it appears.   I still don't really understand why this is occurring or needed.  Neither of my monitors run at 110 ppi.  Which is why I was apprehensive in following this suggestion read elsewhere before.  However they are different sized monitors.  I wonder now if this will impact anything else I'm doing in the future in Acrobat, but at least i can try to trust my acrobat rulers again.  Thanks

[Brad @ Roaring Mouse]

Multiple monitors are what's confusing Acrobat. It can really configure itself for one at a time (the primary monitor). So, you could very well have correct rulers on your main monitor with System Setting set, but if you move the document wholly to the external, the rulers will be off* (* although if you close the document and reopen it, the rulers should readjust to be correct). It gets even funkier if the document's window is spread across both monitors. Setting the "Custom" setting seems to mitigate this by forcing Acrobat to not try and adjust on the fly.

"I wonder now if this will impact anything else I'm doing in the future in Acrobat, but at least i can try to trust my acrobat rulers again"

This is only a display anomaly and does not affect the document size, so there's no concern there.