Standard or Custom Scale is a property of a layout viewport. Click the button to change the scale. You can modify the list of scales that are displayed in all view.
Click the button to change the scale. You can modify the list of scales that are displayed in all view and plot scale lists with SCALELISTEDIT.
Normally I see a long list which includes scales like Also, for reference, I have changed the units in the bottom bar menu to "Architectural". . this (the attached screenshot) is what shows up: the same scale list as before.
You can then easily select your custom scale from the list instead of entering it through the text box. Oct 20 2015In-Product View Select the User Preferences tab, and then click the Default Scale List button at the bottom of the dialog box.