AutoCAD 2005 Tool Palette Trick - Insert Block using LTSCALE
From Misha (Misha Belilovskiy) of Autodesk who posted this trick in a reply to a discussion thread in the public Autodesk discussion group for AutoCAD 2005.
You can't do it using AutoCAD UI but it is possible if you are not afraid editing your Tool Palette source ATC file. Here is how you do it.
If you would like to replace Auxiliary scale in tool properties (for instance with LTSCALE) you can do the following:
Cheers,
-Shaan