Educate me... Linetype Scale

[Anonymiss]

Is there a shortcut to change the line type scaling factors without having to go thru each item manually changing it?  It's not much of a problem if you only draw in one scale, but when you have multiple drawings that you need to back and forth in and often in 3 or 4 different scales, it becomes rather tedious to constantly have to change the line types.  For example, I have drawings that are in 1/4"-1', 1/8"-1', 1/16"-1', 1"-50' and various other scales.