Where is the zoom control box I want to adjust width

[NORM]

I want to adjust width where do I find the Zoom control bar?

 

[Jay Freedman]

I want to adjust width where do I find the Zoom control bar?

ASSUMING you have Word 2007 -- always an important "detail" -- it's a
slider in the bottom right corner of the window.

 

[Herb Tyson [MVP]]

....and if you don't see it, then right-click the status bar at the bottom of
the Word window, and click Zoom Slider.

You can also zoom using Ctrl+mouse wheel, assuming you have a mouse wheel.
This feature should work in earlier versions of Word, as well.