What's been changed:
Fixed all widths scale, added more buttons with most common SLRR sizes for faster scale!
I've done all the calculations using 6 decimal numbers for max precision, so the tolerance is < 2mm!

This has been tested in 3DS Max 5 and 3ds Max 16 so it's going to work in all the versions between these two too.

How to install:
Extract the contend of this .rar inside your 3DS Max folder

Other credits:
Franco - for original Max script
BigBoss93 - for updating original script

Difference between old scale(up row) and new scale(down row):
Sizes in comparison: x5, x8, x11, x13 and x15


Comparison between old x5(up) and new x8(down)