In some cases you need to set the linetype scale visually, so that line symbols or dashes in a given complex linetype fit nicely in your drawing or so that they would align with other geometry.
Instead of trial-error based numerical setting of the ltscale you can use the utility CADstudio DynLTscale. It will help you to set the requested linetype scale visually, by direct influencing the line appearance on screen.
Downllad the freeware utility DynLTscale from www.cadstudio.cz/download, load it with APPLOAD and run the DLTS command. Pick a specific line to set its individual lt scale or press Enter to change global setting of the variable LTSCALE (for all lines in a given layout or drawing).
Moving your mouse up and down dynamically changes the linetype scale. A faster movement results in larger change. The current linetype scale is displayed in the AutoCAD status line. Click to confirm changes.