Looking for Luke ROTJ hero dimensions

Hello,
I tried to search, but could not find them here.
I remember that there was a thread that had measurements if a screen used hero Luke ROTJ saber.

I have found many different measurements, but I remember that there was a thread here that finally came up with the agreed proper dimensions. Months of searching online and measuring ones I own are all different dimensions.
I am not going to go by another person's saber, hence trying to find the definitive measurements.

I am having a few made, but the measurements I have are all different from each other.

Any help would be greatly appreciated.

Thank you,
Brandon