Use this script for all measuring of records, I will maintain and update it as needed.

Original credit goes to Dafe btw.

Thanks for posting this, but could you please give the commands or tell us how to use it?

And does it work with 3.9?

Just load it up. It makes a ruler between the starting points of tori and uke.
It works with 3.9, but it draws a lot of objects, so don't use it with ray tracing.

If you want a version where you can measure the distance between to arbitrary points, I can make another script for that.

So basically it's just a ruler/protractor/etc.?

Yes.
It's helpful for getting an accurate measurement of distance based records.

That would be very useful so if you can make one it would be great.

Hmm I did use it with raytracing and for a replay with a distance for 1001, but the ruler was only between the default positions of uke and the tori. Was that supposed to happen?

I did not have any visual problems with it though.